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Finding the Fourth Proportional to 22,130.76, 30,540.44 and 12,194.76

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Solution

The fourth proportional to 22,130.76, 30,540.44 and 12,194.76 is: 16,828.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,130.76 : 30,540.44 = 12,194.76 : x
  2. Step 2: Convert to fraction form
    22,130.76/30,540.44 = 12,194.76/x
  3. Step 3: Cross multiply
    22,130.76x = 30,540.44 × 12,194.76
  4. Step 4: Simplify right side
    22,130.76x = 372,433,336.09
  5. Step 5: Solve for x
    x = 372,433,336.09/22,130.76
  6. Step 6: Final answer
    x = 16,828.76

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Find fourth proportional to 11,065.38, 15,270.22 and 6,097.38
Half scale
Find fourth proportional to 44,261.52, 61,080.88 and 24,389.52
Double scale
Find fourth proportional to 22,131.76, 30,541.82 and 12,195.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.