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Finding the Fourth Proportional to 120,024.62, 165,605.94 and 71,629.04

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Solution

The fourth proportional to 120,024.62, 165,605.94 and 71,629.04 is: 98,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,024.62 : 165,605.94 = 71,629.04 : x
  2. Step 2: Convert to fraction form
    120,024.62/165,605.94 = 71,629.04/x
  3. Step 3: Cross multiply
    120,024.62x = 165,605.94 × 71,629.04
  4. Step 4: Simplify right side
    120,024.62x = 11,862,194,500.50
  5. Step 5: Solve for x
    x = 11,862,194,500.50/120,024.62
  6. Step 6: Final answer
    x = 98,831.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.