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Finding the Fourth Proportional to 69,660.60, 96,159.12 and 47,013

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Solution

The fourth proportional to 69,660.60, 96,159.12 and 47,013 is: 64,896.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,660.60 : 96,159.12 = 47,013 : x
  2. Step 2: Convert to fraction form
    69,660.60/96,159.12 = 47,013/x
  3. Step 3: Cross multiply
    69,660.60x = 96,159.12 × 47,013
  4. Step 4: Simplify right side
    69,660.60x = 4,520,728,708.56
  5. Step 5: Solve for x
    x = 4,520,728,708.56/69,660.60
  6. Step 6: Final answer
    x = 64,896.49

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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.