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Finding the Fourth Proportional to 325,363.20, 488,117.70 and 125,665.80

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Solution

The fourth proportional to 325,363.20, 488,117.70 and 125,665.80 is: 188,526.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,363.20 : 488,117.70 = 125,665.80 : x
  2. Step 2: Convert to fraction form
    325,363.20/488,117.70 = 125,665.80/x
  3. Step 3: Cross multiply
    325,363.20x = 488,117.70 × 125,665.80
  4. Step 4: Simplify right side
    325,363.20x = 61,339,701,264.66
  5. Step 5: Solve for x
    x = 61,339,701,264.66/325,363.20
  6. Step 6: Final answer
    x = 188,526.86

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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.