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Finding the Fourth Proportional to 169,432.59, 253,983.63 and 80,662.26

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Solution

The fourth proportional to 169,432.59, 253,983.63 and 80,662.26 is: 120,914.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,432.59 : 253,983.63 = 80,662.26 : x
  2. Step 2: Convert to fraction form
    169,432.59/253,983.63 = 80,662.26/x
  3. Step 3: Cross multiply
    169,432.59x = 253,983.63 × 80,662.26
  4. Step 4: Simplify right side
    169,432.59x = 20,486,893,598.80
  5. Step 5: Solve for x
    x = 20,486,893,598.80/169,432.59
  6. Step 6: Final answer
    x = 120,914.72

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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.