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Finding the Fourth Proportional to 398,614.60, 597,921.90 and 381,337.30

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Solution

The fourth proportional to 398,614.60, 597,921.90 and 381,337.30 is: 572,005.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,614.60 : 597,921.90 = 381,337.30 : x
  2. Step 2: Convert to fraction form
    398,614.60/597,921.90 = 381,337.30/x
  3. Step 3: Cross multiply
    398,614.60x = 597,921.90 × 381,337.30
  4. Step 4: Simplify right side
    398,614.60x = 228,009,922,956.87
  5. Step 5: Solve for x
    x = 228,009,922,956.87/398,614.60
  6. Step 6: Final answer
    x = 572,005.95

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Similar ratio
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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.