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Finding the Fourth Proportional to 619,819.60, 929,729.40 and 514,843.60

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Solution

The fourth proportional to 619,819.60, 929,729.40 and 514,843.60 is: 772,265.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,819.60 : 929,729.40 = 514,843.60 : x
  2. Step 2: Convert to fraction form
    619,819.60/929,729.40 = 514,843.60/x
  3. Step 3: Cross multiply
    619,819.60x = 929,729.40 × 514,843.60
  4. Step 4: Simplify right side
    619,819.60x = 478,665,231,321.84
  5. Step 5: Solve for x
    x = 478,665,231,321.84/619,819.60
  6. Step 6: Final answer
    x = 772,265.40

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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.