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Finding the Fourth Proportional to 138,710.66, 191,246.44 and 113,191.11

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Solution

The fourth proportional to 138,710.66, 191,246.44 and 113,191.11 is: 156,061.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,710.66 : 191,246.44 = 113,191.11 : x
  2. Step 2: Convert to fraction form
    138,710.66/191,246.44 = 113,191.11/x
  3. Step 3: Cross multiply
    138,710.66x = 191,246.44 × 113,191.11
  4. Step 4: Simplify right side
    138,710.66x = 21,647,395,304.96
  5. Step 5: Solve for x
    x = 21,647,395,304.96/138,710.66
  6. Step 6: Final answer
    x = 156,061.51

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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.