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Finding the Fourth Proportional to 625,613.60, 863,347.92 and 339,132.80

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Solution

The fourth proportional to 625,613.60, 863,347.92 and 339,132.80 is: 468,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,613.60 : 863,347.92 = 339,132.80 : x
  2. Step 2: Convert to fraction form
    625,613.60/863,347.92 = 339,132.80/x
  3. Step 3: Cross multiply
    625,613.60x = 863,347.92 × 339,132.80
  4. Step 4: Simplify right side
    625,613.60x = 292,789,597,483.78
  5. Step 5: Solve for x
    x = 292,789,597,483.78/625,613.60
  6. Step 6: Final answer
    x = 468,003.89

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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.