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Finding the Fourth Proportional to 111,576.87, 153,924.51 and 66,229.11

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Solution

The fourth proportional to 111,576.87, 153,924.51 and 66,229.11 is: 91,365.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,576.87 : 153,924.51 = 66,229.11 : x
  2. Step 2: Convert to fraction form
    111,576.87/153,924.51 = 66,229.11/x
  3. Step 3: Cross multiply
    111,576.87x = 153,924.51 × 66,229.11
  4. Step 4: Simplify right side
    111,576.87x = 10,194,283,304.49
  5. Step 5: Solve for x
    x = 10,194,283,304.49/111,576.87
  6. Step 6: Final answer
    x = 91,365.56

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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.