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Finding the Fourth Proportional to 117,691.90, 162,398.79 and 69,927.82

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Solution

The fourth proportional to 117,691.90, 162,398.79 and 69,927.82 is: 96,490.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,691.90 : 162,398.79 = 69,927.82 : x
  2. Step 2: Convert to fraction form
    117,691.90/162,398.79 = 69,927.82/x
  3. Step 3: Cross multiply
    117,691.90x = 162,398.79 × 69,927.82
  4. Step 4: Simplify right side
    117,691.90x = 11,356,193,355.34
  5. Step 5: Solve for x
    x = 11,356,193,355.34/117,691.90
  6. Step 6: Final answer
    x = 96,490.87

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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.