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Finding the Fourth Proportional to 125,425.45, 173,058.69 and 71,701.80

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Solution

The fourth proportional to 125,425.45, 173,058.69 and 71,701.80 is: 98,932.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,425.45 : 173,058.69 = 71,701.80 : x
  2. Step 2: Convert to fraction form
    125,425.45/173,058.69 = 71,701.80/x
  3. Step 3: Cross multiply
    125,425.45x = 173,058.69 × 71,701.80
  4. Step 4: Simplify right side
    125,425.45x = 12,408,619,578.64
  5. Step 5: Solve for x
    x = 12,408,619,578.64/125,425.45
  6. Step 6: Final answer
    x = 98,932.23

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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.