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Finding the Fourth Proportional to 619,701.60, 929,552.40 and 519,318.30

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Solution

The fourth proportional to 619,701.60, 929,552.40 and 519,318.30 is: 778,977.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,701.60 : 929,552.40 = 519,318.30 : x
  2. Step 2: Convert to fraction form
    619,701.60/929,552.40 = 519,318.30/x
  3. Step 3: Cross multiply
    619,701.60x = 929,552.40 × 519,318.30
  4. Step 4: Simplify right side
    619,701.60x = 482,733,572,128.92
  5. Step 5: Solve for x
    x = 482,733,572,128.92/619,701.60
  6. Step 6: Final answer
    x = 778,977.45

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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.