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Finding the Fourth Proportional to 101,351.14, 139,876.74 and 58,909.67

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Solution

The fourth proportional to 101,351.14, 139,876.74 and 58,909.67 is: 81,302.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,351.14 : 139,876.74 = 58,909.67 : x
  2. Step 2: Convert to fraction form
    101,351.14/139,876.74 = 58,909.67/x
  3. Step 3: Cross multiply
    101,351.14x = 139,876.74 × 58,909.67
  4. Step 4: Simplify right side
    101,351.14x = 8,240,092,594.08
  5. Step 5: Solve for x
    x = 8,240,092,594.08/101,351.14
  6. Step 6: Final answer
    x = 81,302.42

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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.