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Finding the Fourth Proportional to 125,167.69, 172,745.90 and 71,460.44

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Solution

The fourth proportional to 125,167.69, 172,745.90 and 71,460.44 is: 98,623.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,167.69 : 172,745.90 = 71,460.44 : x
  2. Step 2: Convert to fraction form
    125,167.69/172,745.90 = 71,460.44/x
  3. Step 3: Cross multiply
    125,167.69x = 172,745.90 × 71,460.44
  4. Step 4: Simplify right side
    125,167.69x = 12,344,498,022.20
  5. Step 5: Solve for x
    x = 12,344,498,022.20/125,167.69
  6. Step 6: Final answer
    x = 98,623.68

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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.