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Finding the Fourth Proportional to 619,025.76, 928,538.40 and 408,614.40

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Solution

The fourth proportional to 619,025.76, 928,538.40 and 408,614.40 is: 612,921.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,025.76 : 928,538.40 = 408,614.40 : x
  2. Step 2: Convert to fraction form
    619,025.76/928,538.40 = 408,614.40/x
  3. Step 3: Cross multiply
    619,025.76x = 928,538.40 × 408,614.40
  4. Step 4: Simplify right side
    619,025.76x = 379,414,161,192.96
  5. Step 5: Solve for x
    x = 379,414,161,192.96/619,025.76
  6. Step 6: Final answer
    x = 612,921.44

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Double scale
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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.