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Finding the Fourth Proportional to 66,394.46, 91,591.89 and 39,528.38

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Solution

The fourth proportional to 66,394.46, 91,591.89 and 39,528.38 is: 54,529.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,394.46 : 91,591.89 = 39,528.38 : x
  2. Step 2: Convert to fraction form
    66,394.46/91,591.89 = 39,528.38/x
  3. Step 3: Cross multiply
    66,394.46x = 91,591.89 × 39,528.38
  4. Step 4: Simplify right side
    66,394.46x = 3,620,479,032.84
  5. Step 5: Solve for x
    x = 3,620,479,032.84/66,394.46
  6. Step 6: Final answer
    x = 54,529.84

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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.