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Finding the Fourth Proportional to 574,228.53, 861,343.11 and 258,316.38

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Solution

The fourth proportional to 574,228.53, 861,343.11 and 258,316.38 is: 387,474.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,228.53 : 861,343.11 = 258,316.38 : x
  2. Step 2: Convert to fraction form
    574,228.53/861,343.11 = 258,316.38/x
  3. Step 3: Cross multiply
    574,228.53x = 861,343.11 × 258,316.38
  4. Step 4: Simplify right side
    574,228.53x = 222,499,034,113.14
  5. Step 5: Solve for x
    x = 222,499,034,113.14/574,228.53
  6. Step 6: Final answer
    x = 387,474.71

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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.