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Finding the Fourth Proportional to 163,005.62, 224,947.60 and 91,385.66

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Solution

The fourth proportional to 163,005.62, 224,947.60 and 91,385.66 is: 126,112.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,005.62 : 224,947.60 = 91,385.66 : x
  2. Step 2: Convert to fraction form
    163,005.62/224,947.60 = 91,385.66/x
  3. Step 3: Cross multiply
    163,005.62x = 224,947.60 × 91,385.66
  4. Step 4: Simplify right side
    163,005.62x = 20,556,984,891.42
  5. Step 5: Solve for x
    x = 20,556,984,891.42/163,005.62
  6. Step 6: Final answer
    x = 126,112.12

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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.