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Finding the Fourth Proportional to 60,512.30, 90,865.65 and 45,737.90

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Solution

The fourth proportional to 60,512.30, 90,865.65 and 45,737.90 is: 68,680.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,512.30 : 90,865.65 = 45,737.90 : x
  2. Step 2: Convert to fraction form
    60,512.30/90,865.65 = 45,737.90/x
  3. Step 3: Cross multiply
    60,512.30x = 90,865.65 × 45,737.90
  4. Step 4: Simplify right side
    60,512.30x = 4,156,004,013.14
  5. Step 5: Solve for x
    x = 4,156,004,013.14/60,512.30
  6. Step 6: Final answer
    x = 68,680.32

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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.