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Finding the Fourth Proportional to 316,155.56, 474,234.14 and 129,167.06

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Solution

The fourth proportional to 316,155.56, 474,234.14 and 129,167.06 is: 193,750.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,155.56 : 474,234.14 = 129,167.06 : x
  2. Step 2: Convert to fraction form
    316,155.56/474,234.14 = 129,167.06/x
  3. Step 3: Cross multiply
    316,155.56x = 474,234.14 × 129,167.06
  4. Step 4: Simplify right side
    316,155.56x = 61,255,427,567.18
  5. Step 5: Solve for x
    x = 61,255,427,567.18/316,155.56
  6. Step 6: Final answer
    x = 193,750.91

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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.