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Finding the Fourth Proportional to 79,912.50, 119,754.51 and 58,686.06

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Solution

The fourth proportional to 79,912.50, 119,754.51 and 58,686.06 is: 87,945.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,912.50 : 119,754.51 = 58,686.06 : x
  2. Step 2: Convert to fraction form
    79,912.50/119,754.51 = 58,686.06/x
  3. Step 3: Cross multiply
    79,912.50x = 119,754.51 × 58,686.06
  4. Step 4: Simplify right side
    79,912.50x = 7,027,920,359.13
  5. Step 5: Solve for x
    x = 7,027,920,359.13/79,912.50
  6. Step 6: Final answer
    x = 87,945.19

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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.