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Finding the Fourth Proportional to 418,443.39, 627,629.45 and 165,655.13

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Solution

The fourth proportional to 418,443.39, 627,629.45 and 165,655.13 is: 248,468.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,443.39 : 627,629.45 = 165,655.13 : x
  2. Step 2: Convert to fraction form
    418,443.39/627,629.45 = 165,655.13/x
  3. Step 3: Cross multiply
    418,443.39x = 627,629.45 × 165,655.13
  4. Step 4: Simplify right side
    418,443.39x = 103,970,034,165.16
  5. Step 5: Solve for x
    x = 103,970,034,165.16/418,443.39
  6. Step 6: Final answer
    x = 248,468.58

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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.