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Finding the Fourth Proportional to 656,861.80, 985,292.70 and 453,908.20

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Solution

The fourth proportional to 656,861.80, 985,292.70 and 453,908.20 is: 680,862.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,861.80 : 985,292.70 = 453,908.20 : x
  2. Step 2: Convert to fraction form
    656,861.80/985,292.70 = 453,908.20/x
  3. Step 3: Cross multiply
    656,861.80x = 985,292.70 × 453,908.20
  4. Step 4: Simplify right side
    656,861.80x = 447,232,435,930.14
  5. Step 5: Solve for x
    x = 447,232,435,930.14/656,861.80
  6. Step 6: Final answer
    x = 680,862.30

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Double scale
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Similar ratio
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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.