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Finding the Fourth Proportional to 122,812.60, 169,469.31 and 69,096.46

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Solution

The fourth proportional to 122,812.60, 169,469.31 and 69,096.46 is: 95,346.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,812.60 : 169,469.31 = 69,096.46 : x
  2. Step 2: Convert to fraction form
    122,812.60/169,469.31 = 69,096.46/x
  3. Step 3: Cross multiply
    122,812.60x = 169,469.31 × 69,096.46
  4. Step 4: Simplify right side
    122,812.60x = 11,709,729,399.64
  5. Step 5: Solve for x
    x = 11,709,729,399.64/122,812.60
  6. Step 6: Final answer
    x = 95,346.32

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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.