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Finding the Fourth Proportional to 664,458.90, 996,688.35 and 619,844.10

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Solution

The fourth proportional to 664,458.90, 996,688.35 and 619,844.10 is: 929,766.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,458.90 : 996,688.35 = 619,844.10 : x
  2. Step 2: Convert to fraction form
    664,458.90/996,688.35 = 619,844.10/x
  3. Step 3: Cross multiply
    664,458.90x = 996,688.35 × 619,844.10
  4. Step 4: Simplify right side
    664,458.90x = 617,791,393,286.24
  5. Step 5: Solve for x
    x = 617,791,393,286.24/664,458.90
  6. Step 6: Final answer
    x = 929,766.15

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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.