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Finding the Fourth Proportional to 104,432.40, 156,697.20 and 54,568.80

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Solution

The fourth proportional to 104,432.40, 156,697.20 and 54,568.80 is: 81,878.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,432.40 : 156,697.20 = 54,568.80 : x
  2. Step 2: Convert to fraction form
    104,432.40/156,697.20 = 54,568.80/x
  3. Step 3: Cross multiply
    104,432.40x = 156,697.20 × 54,568.80
  4. Step 4: Simplify right side
    104,432.40x = 8,550,778,167.36
  5. Step 5: Solve for x
    x = 8,550,778,167.36/104,432.40
  6. Step 6: Final answer
    x = 81,878.59

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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.