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Finding the Fourth Proportional to 89,807.81, 134,712.92 and 43,049.75

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Solution

The fourth proportional to 89,807.81, 134,712.92 and 43,049.75 is: 64,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,807.81 : 134,712.92 = 43,049.75 : x
  2. Step 2: Convert to fraction form
    89,807.81/134,712.92 = 43,049.75/x
  3. Step 3: Cross multiply
    89,807.81x = 134,712.92 × 43,049.75
  4. Step 4: Simplify right side
    89,807.81x = 5,799,356,961.83
  5. Step 5: Solve for x
    x = 5,799,356,961.83/89,807.81
  6. Step 6: Final answer
    x = 64,575.20

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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.