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Finding the Fourth Proportional to 498,942.80, 748,414.20 and 498,942.80

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Solution

The fourth proportional to 498,942.80, 748,414.20 and 498,942.80 is: 748,414.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,942.80 : 748,414.20 = 498,942.80 : x
  2. Step 2: Convert to fraction form
    498,942.80/748,414.20 = 498,942.80/x
  3. Step 3: Cross multiply
    498,942.80x = 748,414.20 × 498,942.80
  4. Step 4: Simplify right side
    498,942.80x = 373,415,876,507.76
  5. Step 5: Solve for x
    x = 373,415,876,507.76/498,942.80
  6. Step 6: Final answer
    x = 748,414.20

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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.