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Finding the Fourth Proportional to 69,113.67, 103,665.64 and 26,985.84

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Solution

The fourth proportional to 69,113.67, 103,665.64 and 26,985.84 is: 40,476.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,113.67 : 103,665.64 = 26,985.84 : x
  2. Step 2: Convert to fraction form
    69,113.67/103,665.64 = 26,985.84/x
  3. Step 3: Cross multiply
    69,113.67x = 103,665.64 × 26,985.84
  4. Step 4: Simplify right side
    69,113.67x = 2,797,504,374.54
  5. Step 5: Solve for x
    x = 2,797,504,374.54/69,113.67
  6. Step 6: Final answer
    x = 40,476.86

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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.