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Finding the Fourth Proportional to 8,116.76, 11,201.14 and 4,390.76

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Solution

The fourth proportional to 8,116.76, 11,201.14 and 4,390.76 is: 6,059.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,116.76 : 11,201.14 = 4,390.76 : x
  2. Step 2: Convert to fraction form
    8,116.76/11,201.14 = 4,390.76/x
  3. Step 3: Cross multiply
    8,116.76x = 11,201.14 × 4,390.76
  4. Step 4: Simplify right side
    8,116.76x = 49,181,517.47
  5. Step 5: Solve for x
    x = 49,181,517.47/8,116.76
  6. Step 6: Final answer
    x = 6,059.25

Related Problems

Find fourth proportional to 4,058.38, 5,600.57 and 2,195.38
Half scale
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Double scale
Find fourth proportional to 8,117.76, 11,202.52 and 4,391.76
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.