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Finding the Fourth Proportional to 18,676.76, 25,762.59 and 11,118.11

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Solution

The fourth proportional to 18,676.76, 25,762.59 and 11,118.11 is: 15,336.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.76 : 25,762.59 = 11,118.11 : x
  2. Step 2: Convert to fraction form
    18,676.76/25,762.59 = 11,118.11/x
  3. Step 3: Cross multiply
    18,676.76x = 25,762.59 × 11,118.11
  4. Step 4: Simplify right side
    18,676.76x = 286,431,180.69
  5. Step 5: Solve for x
    x = 286,431,180.69/18,676.76
  6. Step 6: Final answer
    x = 15,336.24

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Half scale
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Double scale
Find fourth proportional to 18,677.76, 25,763.97 and 11,119.11
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.