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Finding the Fourth Proportional to 79,881.52, 119,811.84 and 23,720.48

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Solution

The fourth proportional to 79,881.52, 119,811.84 and 23,720.48 is: 35,577.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,881.52 : 119,811.84 = 23,720.48 : x
  2. Step 2: Convert to fraction form
    79,881.52/119,811.84 = 23,720.48/x
  3. Step 3: Cross multiply
    79,881.52x = 119,811.84 × 23,720.48
  4. Step 4: Simplify right side
    79,881.52x = 2,841,994,354.48
  5. Step 5: Solve for x
    x = 2,841,994,354.48/79,881.52
  6. Step 6: Final answer
    x = 35,577.62

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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.