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Finding the Fourth Proportional to 331,616.70, 497,521.92 and 106,972.15

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Solution

The fourth proportional to 331,616.70, 497,521.92 and 106,972.15 is: 160,489.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,616.70 : 497,521.92 = 106,972.15 : x
  2. Step 2: Convert to fraction form
    331,616.70/497,521.92 = 106,972.15/x
  3. Step 3: Cross multiply
    331,616.70x = 497,521.92 × 106,972.15
  4. Step 4: Simplify right side
    331,616.70x = 53,220,989,454.53
  5. Step 5: Solve for x
    x = 53,220,989,454.53/331,616.70
  6. Step 6: Final answer
    x = 160,489.47

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1.5x scale

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.