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Finding the Fourth Proportional to 66,228.91, 91,392.20 and 37,936.42

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Solution

The fourth proportional to 66,228.91, 91,392.20 and 37,936.42 is: 52,350.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,228.91 : 91,392.20 = 37,936.42 : x
  2. Step 2: Convert to fraction form
    66,228.91/91,392.20 = 37,936.42/x
  3. Step 3: Cross multiply
    66,228.91x = 91,392.20 × 37,936.42
  4. Step 4: Simplify right side
    66,228.91x = 3,467,092,608.02
  5. Step 5: Solve for x
    x = 3,467,092,608.02/66,228.91
  6. Step 6: Final answer
    x = 52,350.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.