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Finding the Fourth Proportional to 108,643.80, 162,965.70 and 94,819.80

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Solution

The fourth proportional to 108,643.80, 162,965.70 and 94,819.80 is: 142,229.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,643.80 : 162,965.70 = 94,819.80 : x
  2. Step 2: Convert to fraction form
    108,643.80/162,965.70 = 94,819.80/x
  3. Step 3: Cross multiply
    108,643.80x = 162,965.70 × 94,819.80
  4. Step 4: Simplify right side
    108,643.80x = 15,452,375,080.86
  5. Step 5: Solve for x
    x = 15,452,375,080.86/108,643.80
  6. Step 6: Final answer
    x = 142,229.70

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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.