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Finding the Fourth Proportional to 118,217.14, 163,199.14 and 75,239.89

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Solution

The fourth proportional to 118,217.14, 163,199.14 and 75,239.89 is: 103,868.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,217.14 : 163,199.14 = 75,239.89 : x
  2. Step 2: Convert to fraction form
    118,217.14/163,199.14 = 75,239.89/x
  3. Step 3: Cross multiply
    118,217.14x = 163,199.14 × 75,239.89
  4. Step 4: Simplify right side
    118,217.14x = 12,279,084,745.60
  5. Step 5: Solve for x
    x = 12,279,084,745.60/118,217.14
  6. Step 6: Final answer
    x = 103,868.91

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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.