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Finding the Fourth Proportional to 625,111.80, 862,656.89 and 338,631.86

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Solution

The fourth proportional to 625,111.80, 862,656.89 and 338,631.86 is: 467,313.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,111.80 : 862,656.89 = 338,631.86 : x
  2. Step 2: Convert to fraction form
    625,111.80/862,656.89 = 338,631.86/x
  3. Step 3: Cross multiply
    625,111.80x = 862,656.89 × 338,631.86
  4. Step 4: Simplify right side
    625,111.80x = 292,123,101,196.07
  5. Step 5: Solve for x
    x = 292,123,101,196.07/625,111.80
  6. Step 6: Final answer
    x = 467,313.37

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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.