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Finding the Fourth Proportional to 66,237.46, 91,404.93 and 37,945.78

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Solution

The fourth proportional to 66,237.46, 91,404.93 and 37,945.78 is: 52,363.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,237.46 : 91,404.93 = 37,945.78 : x
  2. Step 2: Convert to fraction form
    66,237.46/91,404.93 = 37,945.78/x
  3. Step 3: Cross multiply
    66,237.46x = 91,404.93 × 37,945.78
  4. Step 4: Simplify right side
    66,237.46x = 3,468,431,364.70
  5. Step 5: Solve for x
    x = 3,468,431,364.70/66,237.46
  6. Step 6: Final answer
    x = 52,363.59

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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.