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Finding the Fourth Proportional to 393,366.38, 542,931.56 and 250,098.44

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Solution

The fourth proportional to 393,366.38, 542,931.56 and 250,098.44 is: 345,190.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,366.38 : 542,931.56 = 250,098.44 : x
  2. Step 2: Convert to fraction form
    393,366.38/542,931.56 = 250,098.44/x
  3. Step 3: Cross multiply
    393,366.38x = 542,931.56 × 250,098.44
  4. Step 4: Simplify right side
    393,366.38x = 135,786,336,182.77
  5. Step 5: Solve for x
    x = 135,786,336,182.77/393,366.38
  6. Step 6: Final answer
    x = 345,190.50

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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.