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Finding the Fourth Proportional to 117,661.35, 176,454.11 and 38,756.79

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Solution

The fourth proportional to 117,661.35, 176,454.11 and 38,756.79 is: 58,122.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,661.35 : 176,454.11 = 38,756.79 : x
  2. Step 2: Convert to fraction form
    117,661.35/176,454.11 = 38,756.79/x
  3. Step 3: Cross multiply
    117,661.35x = 176,454.11 × 38,756.79
  4. Step 4: Simplify right side
    117,661.35x = 6,838,794,692.12
  5. Step 5: Solve for x
    x = 6,838,794,692.12/117,661.35
  6. Step 6: Final answer
    x = 58,122.69

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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.