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Finding the Fourth Proportional to 168,371.90, 232,354.50 and 91,891.58

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Solution

The fourth proportional to 168,371.90, 232,354.50 and 91,891.58 is: 126,811.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,371.90 : 232,354.50 = 91,891.58 : x
  2. Step 2: Convert to fraction form
    168,371.90/232,354.50 = 91,891.58/x
  3. Step 3: Cross multiply
    168,371.90x = 232,354.50 × 91,891.58
  4. Step 4: Simplify right side
    168,371.90x = 21,351,422,125.11
  5. Step 5: Solve for x
    x = 21,351,422,125.11/168,371.90
  6. Step 6: Final answer
    x = 126,811.08

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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.