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Finding the Fourth Proportional to 104,572.60, 156,686.10 and 89,020.60

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Solution

The fourth proportional to 104,572.60, 156,686.10 and 89,020.60 is: 133,383.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,572.60 : 156,686.10 = 89,020.60 : x
  2. Step 2: Convert to fraction form
    104,572.60/156,686.10 = 89,020.60/x
  3. Step 3: Cross multiply
    104,572.60x = 156,686.10 × 89,020.60
  4. Step 4: Simplify right side
    104,572.60x = 13,948,290,633.66
  5. Step 5: Solve for x
    x = 13,948,290,633.66/104,572.60
  6. Step 6: Final answer
    x = 133,383.80

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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.