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Finding the Fourth Proportional to 66,780.80, 100,184.64 and 24,661.16

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Solution

The fourth proportional to 66,780.80, 100,184.64 and 24,661.16 is: 36,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,780.80 : 100,184.64 = 24,661.16 : x
  2. Step 2: Convert to fraction form
    66,780.80/100,184.64 = 24,661.16/x
  3. Step 3: Cross multiply
    66,780.80x = 100,184.64 × 24,661.16
  4. Step 4: Simplify right side
    66,780.80x = 2,470,669,436.58
  5. Step 5: Solve for x
    x = 2,470,669,436.58/66,780.80
  6. Step 6: Final answer
    x = 36,996.70

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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.