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Finding the Fourth Proportional to 104,430.60, 156,645.90 and 25,543.80

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Solution

The fourth proportional to 104,430.60, 156,645.90 and 25,543.80 is: 38,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,430.60 : 156,645.90 = 25,543.80 : x
  2. Step 2: Convert to fraction form
    104,430.60/156,645.90 = 25,543.80/x
  3. Step 3: Cross multiply
    104,430.60x = 156,645.90 × 25,543.80
  4. Step 4: Simplify right side
    104,430.60x = 4,001,331,540.42
  5. Step 5: Solve for x
    x = 4,001,331,540.42/104,430.60
  6. Step 6: Final answer
    x = 38,315.70

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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.