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Finding the Fourth Proportional to 91,249.20, 136,614.60 and 91,249.20

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Solution

The fourth proportional to 91,249.20, 136,614.60 and 91,249.20 is: 136,614.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,249.20 : 136,614.60 = 91,249.20 : x
  2. Step 2: Convert to fraction form
    91,249.20/136,614.60 = 91,249.20/x
  3. Step 3: Cross multiply
    91,249.20x = 136,614.60 × 91,249.20
  4. Step 4: Simplify right side
    91,249.20x = 12,465,972,958.32
  5. Step 5: Solve for x
    x = 12,465,972,958.32/91,249.20
  6. Step 6: Final answer
    x = 136,614.60

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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.