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Finding the Fourth Proportional to 171,354.38, 236,447.79 and 99,747.14

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Solution

The fourth proportional to 171,354.38, 236,447.79 and 99,747.14 is: 137,638.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,354.38 : 236,447.79 = 99,747.14 : x
  2. Step 2: Convert to fraction form
    171,354.38/236,447.79 = 99,747.14/x
  3. Step 3: Cross multiply
    171,354.38x = 236,447.79 × 99,747.14
  4. Step 4: Simplify right side
    171,354.38x = 23,584,990,811.82
  5. Step 5: Solve for x
    x = 23,584,990,811.82/171,354.38
  6. Step 6: Final answer
    x = 137,638.68

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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.