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Finding the Fourth Proportional to 672,659.46, 928,227.87 and 385,977.78

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Solution

The fourth proportional to 672,659.46, 928,227.87 and 385,977.78 is: 532,625.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,659.46 : 928,227.87 = 385,977.78 : x
  2. Step 2: Convert to fraction form
    672,659.46/928,227.87 = 385,977.78/x
  3. Step 3: Cross multiply
    672,659.46x = 928,227.87 × 385,977.78
  4. Step 4: Simplify right side
    672,659.46x = 358,275,332,596.73
  5. Step 5: Solve for x
    x = 358,275,332,596.73/672,659.46
  6. Step 6: Final answer
    x = 532,625.13

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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.