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Finding the Fourth Proportional to 119,604.98, 179,238.32 and 66,320.43

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Solution

The fourth proportional to 119,604.98, 179,238.32 and 66,320.43 is: 99,386.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,604.98 : 179,238.32 = 66,320.43 : x
  2. Step 2: Convert to fraction form
    119,604.98/179,238.32 = 66,320.43/x
  3. Step 3: Cross multiply
    119,604.98x = 179,238.32 × 66,320.43
  4. Step 4: Simplify right side
    119,604.98x = 11,887,162,960.10
  5. Step 5: Solve for x
    x = 11,887,162,960.10/119,604.98
  6. Step 6: Final answer
    x = 99,386.86

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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.