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Finding the Fourth Proportional to 149,572.86, 224,172.18 and 74,713.90

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Solution

The fourth proportional to 149,572.86, 224,172.18 and 74,713.90 is: 111,977.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,572.86 : 224,172.18 = 74,713.90 : x
  2. Step 2: Convert to fraction form
    149,572.86/224,172.18 = 74,713.90/x
  3. Step 3: Cross multiply
    149,572.86x = 224,172.18 × 74,713.90
  4. Step 4: Simplify right side
    149,572.86x = 16,748,777,839.30
  5. Step 5: Solve for x
    x = 16,748,777,839.30/149,572.86
  6. Step 6: Final answer
    x = 111,977.39

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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.