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Finding the Fourth Proportional to 104,657.70, 156,986.55 and 52,169.70

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Solution

The fourth proportional to 104,657.70, 156,986.55 and 52,169.70 is: 78,254.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,657.70 : 156,986.55 = 52,169.70 : x
  2. Step 2: Convert to fraction form
    104,657.70/156,986.55 = 52,169.70/x
  3. Step 3: Cross multiply
    104,657.70x = 156,986.55 × 52,169.70
  4. Step 4: Simplify right side
    104,657.70x = 8,189,941,217.54
  5. Step 5: Solve for x
    x = 8,189,941,217.54/104,657.70
  6. Step 6: Final answer
    x = 78,254.55

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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.