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Finding the Fourth Proportional to 619,702.60, 929,553.90 and 519,319.30

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Solution

The fourth proportional to 619,702.60, 929,553.90 and 519,319.30 is: 778,978.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,702.60 : 929,553.90 = 519,319.30 : x
  2. Step 2: Convert to fraction form
    619,702.60/929,553.90 = 519,319.30/x
  3. Step 3: Cross multiply
    619,702.60x = 929,553.90 × 519,319.30
  4. Step 4: Simplify right side
    619,702.60x = 482,735,280,660.27
  5. Step 5: Solve for x
    x = 482,735,280,660.27/619,702.60
  6. Step 6: Final answer
    x = 778,978.95

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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.