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Finding the Fourth Proportional to 132,596.80, 182,981.03 and 72,168.77

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Solution

The fourth proportional to 132,596.80, 182,981.03 and 72,168.77 is: 99,591.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,596.80 : 182,981.03 = 72,168.77 : x
  2. Step 2: Convert to fraction form
    132,596.80/182,981.03 = 72,168.77/x
  3. Step 3: Cross multiply
    132,596.80x = 182,981.03 × 72,168.77
  4. Step 4: Simplify right side
    132,596.80x = 13,205,515,965.04
  5. Step 5: Solve for x
    x = 13,205,515,965.04/132,596.80
  6. Step 6: Final answer
    x = 99,591.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.