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Finding the Fourth Proportional to 117,691.40, 162,398.10 and 69,927.32

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Solution

The fourth proportional to 117,691.40, 162,398.10 and 69,927.32 is: 96,490.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,691.40 : 162,398.10 = 69,927.32 : x
  2. Step 2: Convert to fraction form
    117,691.40/162,398.10 = 69,927.32/x
  3. Step 3: Cross multiply
    117,691.40x = 162,398.10 × 69,927.32
  4. Step 4: Simplify right side
    117,691.40x = 11,356,063,906.09
  5. Step 5: Solve for x
    x = 11,356,063,906.09/117,691.40
  6. Step 6: Final answer
    x = 96,490.18

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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.