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Finding the Fourth Proportional to 115,436.61, 173,209.76 and 79,952.54

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Solution

The fourth proportional to 115,436.61, 173,209.76 and 79,952.54 is: 119,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,436.61 : 173,209.76 = 79,952.54 : x
  2. Step 2: Convert to fraction form
    115,436.61/173,209.76 = 79,952.54/x
  3. Step 3: Cross multiply
    115,436.61x = 173,209.76 × 79,952.54
  4. Step 4: Simplify right side
    115,436.61x = 13,848,560,264.79
  5. Step 5: Solve for x
    x = 13,848,560,264.79/115,436.61
  6. Step 6: Final answer
    x = 119,966.80

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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.