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Finding the Fourth Proportional to 66,196.60, 91,351.14 and 35,981.92

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Solution

The fourth proportional to 66,196.60, 91,351.14 and 35,981.92 is: 49,654.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,196.60 : 91,351.14 = 35,981.92 : x
  2. Step 2: Convert to fraction form
    66,196.60/91,351.14 = 35,981.92/x
  3. Step 3: Cross multiply
    66,196.60x = 91,351.14 × 35,981.92
  4. Step 4: Simplify right side
    66,196.60x = 3,286,989,411.39
  5. Step 5: Solve for x
    x = 3,286,989,411.39/66,196.60
  6. Step 6: Final answer
    x = 49,654.96

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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.