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Finding the Fourth Proportional to 79,872.88, 119,788.80 and 23,699.70

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Solution

The fourth proportional to 79,872.88, 119,788.80 and 23,699.70 is: 35,543.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,872.88 : 119,788.80 = 23,699.70 : x
  2. Step 2: Convert to fraction form
    79,872.88/119,788.80 = 23,699.70/x
  3. Step 3: Cross multiply
    79,872.88x = 119,788.80 × 23,699.70
  4. Step 4: Simplify right side
    79,872.88x = 2,838,958,623.36
  5. Step 5: Solve for x
    x = 2,838,958,623.36/79,872.88
  6. Step 6: Final answer
    x = 35,543.46

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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.