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Finding the Fourth Proportional to 112,951.40, 169,232.70 and 73,488.20

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Solution

The fourth proportional to 112,951.40, 169,232.70 and 73,488.20 is: 110,105.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,951.40 : 169,232.70 = 73,488.20 : x
  2. Step 2: Convert to fraction form
    112,951.40/169,232.70 = 73,488.20/x
  3. Step 3: Cross multiply
    112,951.40x = 169,232.70 × 73,488.20
  4. Step 4: Simplify right side
    112,951.40x = 12,436,606,504.14
  5. Step 5: Solve for x
    x = 12,436,606,504.14/112,951.40
  6. Step 6: Final answer
    x = 110,105.82

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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.