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Finding the Fourth Proportional to 625,200.96, 862,778.16 and 338,721.06

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Solution

The fourth proportional to 625,200.96, 862,778.16 and 338,721.06 is: 467,435.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,200.96 : 862,778.16 = 338,721.06 : x
  2. Step 2: Convert to fraction form
    625,200.96/862,778.16 = 338,721.06/x
  3. Step 3: Cross multiply
    625,200.96x = 862,778.16 × 338,721.06
  4. Step 4: Simplify right side
    625,200.96x = 292,241,132,900.05
  5. Step 5: Solve for x
    x = 292,241,132,900.05/625,200.96
  6. Step 6: Final answer
    x = 467,435.52

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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.