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Finding the Fourth Proportional to 89,079.93, 133,828.92 and 84,036.06

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Solution

The fourth proportional to 89,079.93, 133,828.92 and 84,036.06 is: 126,251.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,079.93 : 133,828.92 = 84,036.06 : x
  2. Step 2: Convert to fraction form
    89,079.93/133,828.92 = 84,036.06/x
  3. Step 3: Cross multiply
    89,079.93x = 133,828.92 × 84,036.06
  4. Step 4: Simplify right side
    89,079.93x = 11,246,455,150.86
  5. Step 5: Solve for x
    x = 11,246,455,150.86/89,079.93
  6. Step 6: Final answer
    x = 126,251.28

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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.