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Finding the Fourth Proportional to 69,455.97, 104,188.82 and 34,386.21

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Solution

The fourth proportional to 69,455.97, 104,188.82 and 34,386.21 is: 51,581.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,455.97 : 104,188.82 = 34,386.21 : x
  2. Step 2: Convert to fraction form
    69,455.97/104,188.82 = 34,386.21/x
  3. Step 3: Cross multiply
    69,455.97x = 104,188.82 × 34,386.21
  4. Step 4: Simplify right side
    69,455.97x = 3,582,658,472.24
  5. Step 5: Solve for x
    x = 3,582,658,472.24/69,455.97
  6. Step 6: Final answer
    x = 51,581.72

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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.