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Finding the Fourth Proportional to 403,568.72, 605,387.91 and 104,046.72

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Solution

The fourth proportional to 403,568.72, 605,387.91 and 104,046.72 is: 156,079.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,568.72 : 605,387.91 = 104,046.72 : x
  2. Step 2: Convert to fraction form
    403,568.72/605,387.91 = 104,046.72/x
  3. Step 3: Cross multiply
    403,568.72x = 605,387.91 × 104,046.72
  4. Step 4: Simplify right side
    403,568.72x = 62,988,626,363.16
  5. Step 5: Solve for x
    x = 62,988,626,363.16/403,568.72
  6. Step 6: Final answer
    x = 156,079.06

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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.