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Finding the Fourth Proportional to 92,781.54, 139,191.24 and 39,473.43

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Solution

The fourth proportional to 92,781.54, 139,191.24 and 39,473.43 is: 59,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,781.54 : 139,191.24 = 39,473.43 : x
  2. Step 2: Convert to fraction form
    92,781.54/139,191.24 = 39,473.43/x
  3. Step 3: Cross multiply
    92,781.54x = 139,191.24 × 39,473.43
  4. Step 4: Simplify right side
    92,781.54x = 5,494,355,668.75
  5. Step 5: Solve for x
    x = 5,494,355,668.75/92,781.54
  6. Step 6: Final answer
    x = 59,218.20

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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.