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Finding the Fourth Proportional to 91,195.56, 136,791.72 and 28,866.24

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Solution

The fourth proportional to 91,195.56, 136,791.72 and 28,866.24 is: 43,298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,195.56 : 136,791.72 = 28,866.24 : x
  2. Step 2: Convert to fraction form
    91,195.56/136,791.72 = 28,866.24/x
  3. Step 3: Cross multiply
    91,195.56x = 136,791.72 × 28,866.24
  4. Step 4: Simplify right side
    91,195.56x = 3,948,662,619.53
  5. Step 5: Solve for x
    x = 3,948,662,619.53/91,195.56
  6. Step 6: Final answer
    x = 43,298.85

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1.5x scale

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.