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Finding the Fourth Proportional to 60,868.90, 91,310.64 and 25,804

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Solution

The fourth proportional to 60,868.90, 91,310.64 and 25,804 is: 38,709.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,868.90 : 91,310.64 = 25,804 : x
  2. Step 2: Convert to fraction form
    60,868.90/91,310.64 = 25,804/x
  3. Step 3: Cross multiply
    60,868.90x = 91,310.64 × 25,804
  4. Step 4: Simplify right side
    60,868.90x = 2,356,179,754.56
  5. Step 5: Solve for x
    x = 2,356,179,754.56/60,868.90
  6. Step 6: Final answer
    x = 38,709.09

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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.