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Finding the Fourth Proportional to 66,404.59, 91,636.75 and 36,190.87

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Solution

The fourth proportional to 66,404.59, 91,636.75 and 36,190.87 is: 49,942.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,404.59 : 91,636.75 = 36,190.87 : x
  2. Step 2: Convert to fraction form
    66,404.59/91,636.75 = 36,190.87/x
  3. Step 3: Cross multiply
    66,404.59x = 91,636.75 × 36,190.87
  4. Step 4: Simplify right side
    66,404.59x = 3,316,413,706.47
  5. Step 5: Solve for x
    x = 3,316,413,706.47/66,404.59
  6. Step 6: Final answer
    x = 49,942.54

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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.