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Finding the Fourth Proportional to 69,888.16, 104,744.73 and 55,038.43

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Solution

The fourth proportional to 69,888.16, 104,744.73 and 55,038.43 is: 82,488.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,888.16 : 104,744.73 = 55,038.43 : x
  2. Step 2: Convert to fraction form
    69,888.16/104,744.73 = 55,038.43/x
  3. Step 3: Cross multiply
    69,888.16x = 104,744.73 × 55,038.43
  4. Step 4: Simplify right side
    69,888.16x = 5,764,985,489.97
  5. Step 5: Solve for x
    x = 5,764,985,489.97/69,888.16
  6. Step 6: Final answer
    x = 82,488.73

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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.