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Finding the Fourth Proportional to 118,967.57, 164,118.66 and 71,211.69

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Solution

The fourth proportional to 118,967.57, 164,118.66 and 71,211.69 is: 98,238.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,967.57 : 164,118.66 = 71,211.69 : x
  2. Step 2: Convert to fraction form
    118,967.57/164,118.66 = 71,211.69/x
  3. Step 3: Cross multiply
    118,967.57x = 164,118.66 × 71,211.69
  4. Step 4: Simplify right side
    118,967.57x = 11,687,166,872.09
  5. Step 5: Solve for x
    x = 11,687,166,872.09/118,967.57
  6. Step 6: Final answer
    x = 98,238.26

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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.