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Finding the Fourth Proportional to 85,930.68, 128,773.08 and 37,841.52

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Solution

The fourth proportional to 85,930.68, 128,773.08 and 37,841.52 is: 56,708.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,930.68 : 128,773.08 = 37,841.52 : x
  2. Step 2: Convert to fraction form
    85,930.68/128,773.08 = 37,841.52/x
  3. Step 3: Cross multiply
    85,930.68x = 128,773.08 × 37,841.52
  4. Step 4: Simplify right side
    85,930.68x = 4,872,969,082.28
  5. Step 5: Solve for x
    x = 4,872,969,082.28/85,930.68
  6. Step 6: Final answer
    x = 56,708.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.