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Finding the Fourth Proportional to 653,040.60, 979,560.90 and 440,464.20

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Solution

The fourth proportional to 653,040.60, 979,560.90 and 440,464.20 is: 660,696.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,040.60 : 979,560.90 = 440,464.20 : x
  2. Step 2: Convert to fraction form
    653,040.60/979,560.90 = 440,464.20/x
  3. Step 3: Cross multiply
    653,040.60x = 979,560.90 × 440,464.20
  4. Step 4: Simplify right side
    653,040.60x = 431,461,508,169.78
  5. Step 5: Solve for x
    x = 431,461,508,169.78/653,040.60
  6. Step 6: Final answer
    x = 660,696.30

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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.