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Finding the Fourth Proportional to 103,375.58, 142,647.68 and 58,058.57

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Solution

The fourth proportional to 103,375.58, 142,647.68 and 58,058.57 is: 80,114.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,375.58 : 142,647.68 = 58,058.57 : x
  2. Step 2: Convert to fraction form
    103,375.58/142,647.68 = 58,058.57/x
  3. Step 3: Cross multiply
    103,375.58x = 142,647.68 × 58,058.57
  4. Step 4: Simplify right side
    103,375.58x = 8,281,920,816.38
  5. Step 5: Solve for x
    x = 8,281,920,816.38/103,375.58
  6. Step 6: Final answer
    x = 80,114.87

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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.