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Finding the Fourth Proportional to 454,017.20, 681,025.80 and 121,593.20

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Solution

The fourth proportional to 454,017.20, 681,025.80 and 121,593.20 is: 182,389.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,017.20 : 681,025.80 = 121,593.20 : x
  2. Step 2: Convert to fraction form
    454,017.20/681,025.80 = 121,593.20/x
  3. Step 3: Cross multiply
    454,017.20x = 681,025.80 × 121,593.20
  4. Step 4: Simplify right side
    454,017.20x = 82,808,106,304.56
  5. Step 5: Solve for x
    x = 82,808,106,304.56/454,017.20
  6. Step 6: Final answer
    x = 182,389.80

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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.