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Finding the Fourth Proportional to 69,309.84, 103,463.34 and 60,902.31

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Solution

The fourth proportional to 69,309.84, 103,463.34 and 60,902.31 is: 90,912.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,309.84 : 103,463.34 = 60,902.31 : x
  2. Step 2: Convert to fraction form
    69,309.84/103,463.34 = 60,902.31/x
  3. Step 3: Cross multiply
    69,309.84x = 103,463.34 × 60,902.31
  4. Step 4: Simplify right side
    69,309.84x = 6,301,156,406.32
  5. Step 5: Solve for x
    x = 6,301,156,406.32/69,309.84
  6. Step 6: Final answer
    x = 90,912.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.