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Finding the Fourth Proportional to 96,737.90, 145,216.20 and 74,649.20

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Solution

The fourth proportional to 96,737.90, 145,216.20 and 74,649.20 is: 112,058.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,737.90 : 145,216.20 = 74,649.20 : x
  2. Step 2: Convert to fraction form
    96,737.90/145,216.20 = 74,649.20/x
  3. Step 3: Cross multiply
    96,737.90x = 145,216.20 × 74,649.20
  4. Step 4: Simplify right side
    96,737.90x = 10,840,273,157.04
  5. Step 5: Solve for x
    x = 10,840,273,157.04/96,737.90
  6. Step 6: Final answer
    x = 112,058.18

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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.