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Finding the Fourth Proportional to 169,648.30, 254,472.45 and 156,817.90

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Solution

The fourth proportional to 169,648.30, 254,472.45 and 156,817.90 is: 235,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,648.30 : 254,472.45 = 156,817.90 : x
  2. Step 2: Convert to fraction form
    169,648.30/254,472.45 = 156,817.90/x
  3. Step 3: Cross multiply
    169,648.30x = 254,472.45 × 156,817.90
  4. Step 4: Simplify right side
    169,648.30x = 39,905,835,216.86
  5. Step 5: Solve for x
    x = 39,905,835,216.86/169,648.30
  6. Step 6: Final answer
    x = 235,226.85

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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.