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Finding the Fourth Proportional to 539,908.38, 745,079.19 and 298,197.12

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Solution

The fourth proportional to 539,908.38, 745,079.19 and 298,197.12 is: 411,515.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,908.38 : 745,079.19 = 298,197.12 : x
  2. Step 2: Convert to fraction form
    539,908.38/745,079.19 = 298,197.12/x
  3. Step 3: Cross multiply
    539,908.38x = 745,079.19 × 298,197.12
  4. Step 4: Simplify right side
    539,908.38x = 222,180,468,629.93
  5. Step 5: Solve for x
    x = 222,180,468,629.93/539,908.38
  6. Step 6: Final answer
    x = 411,515.13

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.