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Finding the Fourth Proportional to 108,722.70, 162,954.45 and 45,542.70

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Solution

The fourth proportional to 108,722.70, 162,954.45 and 45,542.70 is: 68,259.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,722.70 : 162,954.45 = 45,542.70 : x
  2. Step 2: Convert to fraction form
    108,722.70/162,954.45 = 45,542.70/x
  3. Step 3: Cross multiply
    108,722.70x = 162,954.45 × 45,542.70
  4. Step 4: Simplify right side
    108,722.70x = 7,421,385,630.02
  5. Step 5: Solve for x
    x = 7,421,385,630.02/108,722.70
  6. Step 6: Final answer
    x = 68,259.76

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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.