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Finding the Fourth Proportional to 108,614.70, 162,922.05 and 104,985.90

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Solution

The fourth proportional to 108,614.70, 162,922.05 and 104,985.90 is: 157,478.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,614.70 : 162,922.05 = 104,985.90 : x
  2. Step 2: Convert to fraction form
    108,614.70/162,922.05 = 104,985.90/x
  3. Step 3: Cross multiply
    108,614.70x = 162,922.05 × 104,985.90
  4. Step 4: Simplify right side
    108,614.70x = 17,104,518,049.10
  5. Step 5: Solve for x
    x = 17,104,518,049.10/108,614.70
  6. Step 6: Final answer
    x = 157,478.85

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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.