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Finding the Fourth Proportional to 124,732.84, 187,128.48 and 85,308.52

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Solution

The fourth proportional to 124,732.84, 187,128.48 and 85,308.52 is: 127,982.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,732.84 : 187,128.48 = 85,308.52 : x
  2. Step 2: Convert to fraction form
    124,732.84/187,128.48 = 85,308.52/x
  3. Step 3: Cross multiply
    124,732.84x = 187,128.48 × 85,308.52
  4. Step 4: Simplify right side
    124,732.84x = 15,963,653,678.65
  5. Step 5: Solve for x
    x = 15,963,653,678.65/124,732.84
  6. Step 6: Final answer
    x = 127,982.76

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