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Finding the Fourth Proportional to 88,691.10, 133,036.65 and 87,233.10

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Solution

The fourth proportional to 88,691.10, 133,036.65 and 87,233.10 is: 130,849.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,691.10 : 133,036.65 = 87,233.10 : x
  2. Step 2: Convert to fraction form
    88,691.10/133,036.65 = 87,233.10/x
  3. Step 3: Cross multiply
    88,691.10x = 133,036.65 × 87,233.10
  4. Step 4: Simplify right side
    88,691.10x = 11,605,199,393.12
  5. Step 5: Solve for x
    x = 11,605,199,393.12/88,691.10
  6. Step 6: Final answer
    x = 130,849.65

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