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Finding the Fourth Proportional to 119,607.06, 165,059.85 and 65,891.70

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Solution

The fourth proportional to 119,607.06, 165,059.85 and 65,891.70 is: 90,931.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,607.06 : 165,059.85 = 65,891.70 : x
  2. Step 2: Convert to fraction form
    119,607.06/165,059.85 = 65,891.70/x
  3. Step 3: Cross multiply
    119,607.06x = 165,059.85 × 65,891.70
  4. Step 4: Simplify right side
    119,607.06x = 10,876,074,118.25
  5. Step 5: Solve for x
    x = 10,876,074,118.25/119,607.06
  6. Step 6: Final answer
    x = 90,931.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.