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Finding the Fourth Proportional to 119,638.82, 179,288.91 and 66,354.26

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Solution

The fourth proportional to 119,638.82, 179,288.91 and 66,354.26 is: 99,437.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,638.82 : 179,288.91 = 66,354.26 : x
  2. Step 2: Convert to fraction form
    119,638.82/179,288.91 = 66,354.26/x
  3. Step 3: Cross multiply
    119,638.82x = 179,288.91 × 66,354.26
  4. Step 4: Simplify right side
    119,638.82x = 11,896,582,052.81
  5. Step 5: Solve for x
    x = 11,896,582,052.81/119,638.82
  6. Step 6: Final answer
    x = 99,437.47

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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.