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Finding the Fourth Proportional to 107,314.70, 160,972.05 and 82,480.10

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Solution

The fourth proportional to 107,314.70, 160,972.05 and 82,480.10 is: 123,720.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,314.70 : 160,972.05 = 82,480.10 : x
  2. Step 2: Convert to fraction form
    107,314.70/160,972.05 = 82,480.10/x
  3. Step 3: Cross multiply
    107,314.70x = 160,972.05 × 82,480.10
  4. Step 4: Simplify right side
    107,314.70x = 13,276,990,781.21
  5. Step 5: Solve for x
    x = 13,276,990,781.21/107,314.70
  6. Step 6: Final answer
    x = 123,720.15

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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.