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Finding the Fourth Proportional to 74,053.80, 111,080.70 and 61,806.60

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Solution

The fourth proportional to 74,053.80, 111,080.70 and 61,806.60 is: 92,709.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,053.80 : 111,080.70 = 61,806.60 : x
  2. Step 2: Convert to fraction form
    74,053.80/111,080.70 = 61,806.60/x
  3. Step 3: Cross multiply
    74,053.80x = 111,080.70 × 61,806.60
  4. Step 4: Simplify right side
    74,053.80x = 6,865,520,392.62
  5. Step 5: Solve for x
    x = 6,865,520,392.62/74,053.80
  6. Step 6: Final answer
    x = 92,709.90

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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.