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Finding the Fourth Proportional to 69,943.68, 96,453.72 and 54,812.88

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Solution

The fourth proportional to 69,943.68, 96,453.72 and 54,812.88 is: 75,588.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,943.68 : 96,453.72 = 54,812.88 : x
  2. Step 2: Convert to fraction form
    69,943.68/96,453.72 = 54,812.88/x
  3. Step 3: Cross multiply
    69,943.68x = 96,453.72 × 54,812.88
  4. Step 4: Simplify right side
    69,943.68x = 5,286,906,179.91
  5. Step 5: Solve for x
    x = 5,286,906,179.91/69,943.68
  6. Step 6: Final answer
    x = 75,588.05

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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.