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Finding the Fourth Proportional to 574,979.13, 861,515.28 and 349,658.01

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Solution

The fourth proportional to 574,979.13, 861,515.28 and 349,658.01 is: 523,907.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,979.13 : 861,515.28 = 349,658.01 : x
  2. Step 2: Convert to fraction form
    574,979.13/861,515.28 = 349,658.01/x
  3. Step 3: Cross multiply
    574,979.13x = 861,515.28 × 349,658.01
  4. Step 4: Simplify right side
    574,979.13x = 301,235,718,389.39
  5. Step 5: Solve for x
    x = 301,235,718,389.39/574,979.13
  6. Step 6: Final answer
    x = 523,907.22

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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.