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Finding the Fourth Proportional to 66,532.74, 91,815.48 and 36,318.72

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Solution

The fourth proportional to 66,532.74, 91,815.48 and 36,318.72 is: 50,120.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,532.74 : 91,815.48 = 36,318.72 : x
  2. Step 2: Convert to fraction form
    66,532.74/91,815.48 = 36,318.72/x
  3. Step 3: Cross multiply
    66,532.74x = 91,815.48 × 36,318.72
  4. Step 4: Simplify right side
    66,532.74x = 3,334,620,709.79
  5. Step 5: Solve for x
    x = 3,334,620,709.79/66,532.74
  6. Step 6: Final answer
    x = 50,120.00

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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.