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Finding the Fourth Proportional to 91,251.80, 136,903.30 and 44,506.20

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Solution

The fourth proportional to 91,251.80, 136,903.30 and 44,506.20 is: 66,771.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,251.80 : 136,903.30 = 44,506.20 : x
  2. Step 2: Convert to fraction form
    91,251.80/136,903.30 = 44,506.20/x
  3. Step 3: Cross multiply
    91,251.80x = 136,903.30 × 44,506.20
  4. Step 4: Simplify right side
    91,251.80x = 6,093,045,650.46
  5. Step 5: Solve for x
    x = 6,093,045,650.46/91,251.80
  6. Step 6: Final answer
    x = 66,771.79

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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.