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Finding the Fourth Proportional to 119,690.59, 165,180.39 and 65,975.47

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Solution

The fourth proportional to 119,690.59, 165,180.39 and 65,975.47 is: 91,050.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,690.59 : 165,180.39 = 65,975.47 : x
  2. Step 2: Convert to fraction form
    119,690.59/165,180.39 = 65,975.47/x
  3. Step 3: Cross multiply
    119,690.59x = 165,180.39 × 65,975.47
  4. Step 4: Simplify right side
    119,690.59x = 10,897,853,865.03
  5. Step 5: Solve for x
    x = 10,897,853,865.03/119,690.59
  6. Step 6: Final answer
    x = 91,050.21

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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.