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Finding the Fourth Proportional to 484,170.85, 726,256.34 and 129,186.19

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Solution

The fourth proportional to 484,170.85, 726,256.34 and 129,186.19 is: 193,779.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,170.85 : 726,256.34 = 129,186.19 : x
  2. Step 2: Convert to fraction form
    484,170.85/726,256.34 = 129,186.19/x
  3. Step 3: Cross multiply
    484,170.85x = 726,256.34 × 129,186.19
  4. Step 4: Simplify right side
    484,170.85x = 93,822,285,250.73
  5. Step 5: Solve for x
    x = 93,822,285,250.73/484,170.85
  6. Step 6: Final answer
    x = 193,779.30

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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.