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Finding the Fourth Proportional to 69,062.32, 103,768.60 and 64,418.56

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Solution

The fourth proportional to 69,062.32, 103,768.60 and 64,418.56 is: 96,791.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,062.32 : 103,768.60 = 64,418.56 : x
  2. Step 2: Convert to fraction form
    69,062.32/103,768.60 = 64,418.56/x
  3. Step 3: Cross multiply
    69,062.32x = 103,768.60 × 64,418.56
  4. Step 4: Simplify right side
    69,062.32x = 6,684,623,785.22
  5. Step 5: Solve for x
    x = 6,684,623,785.22/69,062.32
  6. Step 6: Final answer
    x = 96,791.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.