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Finding the Fourth Proportional to 614,439.76, 921,815.15 and 171,207.76

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Solution

The fourth proportional to 614,439.76, 921,815.15 and 171,207.76 is: 256,854.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,439.76 : 921,815.15 = 171,207.76 : x
  2. Step 2: Convert to fraction form
    614,439.76/921,815.15 = 171,207.76/x
  3. Step 3: Cross multiply
    614,439.76x = 921,815.15 × 171,207.76
  4. Step 4: Simplify right side
    614,439.76x = 157,821,906,965.56
  5. Step 5: Solve for x
    x = 157,821,906,965.56/614,439.76
  6. Step 6: Final answer
    x = 256,854.97

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1.5x scale

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.