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Finding the Fourth Proportional to 187,171.58, 280,868.56 and 68,925.96

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Solution

The fourth proportional to 187,171.58, 280,868.56 and 68,925.96 is: 103,429.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,171.58 : 280,868.56 = 68,925.96 : x
  2. Step 2: Convert to fraction form
    187,171.58/280,868.56 = 68,925.96/x
  3. Step 3: Cross multiply
    187,171.58x = 280,868.56 × 68,925.96
  4. Step 4: Simplify right side
    187,171.58x = 19,359,134,959.50
  5. Step 5: Solve for x
    x = 19,359,134,959.50/187,171.58
  6. Step 6: Final answer
    x = 103,429.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.