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Finding the Fourth Proportional to 664,544.80, 996,817.20 and 571,232.80

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Solution

The fourth proportional to 664,544.80, 996,817.20 and 571,232.80 is: 856,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,544.80 : 996,817.20 = 571,232.80 : x
  2. Step 2: Convert to fraction form
    664,544.80/996,817.20 = 571,232.80/x
  3. Step 3: Cross multiply
    664,544.80x = 996,817.20 × 571,232.80
  4. Step 4: Simplify right side
    664,544.80x = 569,414,680,244.16
  5. Step 5: Solve for x
    x = 569,414,680,244.16/664,544.80
  6. Step 6: Final answer
    x = 856,849.20

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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.