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Finding the Fourth Proportional to 61,207.59, 84,487.55 and 38,584.70

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Solution

The fourth proportional to 61,207.59, 84,487.55 and 38,584.70 is: 53,260.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,207.59 : 84,487.55 = 38,584.70 : x
  2. Step 2: Convert to fraction form
    61,207.59/84,487.55 = 38,584.70/x
  3. Step 3: Cross multiply
    61,207.59x = 84,487.55 × 38,584.70
  4. Step 4: Simplify right side
    61,207.59x = 3,259,926,155.12
  5. Step 5: Solve for x
    x = 3,259,926,155.12/61,207.59
  6. Step 6: Final answer
    x = 53,260.16

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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.