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Finding the Fourth Proportional to 62,778.66, 94,167.78 and 39,421.50

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Solution

The fourth proportional to 62,778.66, 94,167.78 and 39,421.50 is: 59,132.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,778.66 : 94,167.78 = 39,421.50 : x
  2. Step 2: Convert to fraction form
    62,778.66/94,167.78 = 39,421.50/x
  3. Step 3: Cross multiply
    62,778.66x = 94,167.78 × 39,421.50
  4. Step 4: Simplify right side
    62,778.66x = 3,712,235,139.27
  5. Step 5: Solve for x
    x = 3,712,235,139.27/62,778.66
  6. Step 6: Final answer
    x = 59,132.12

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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.