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Finding the Fourth Proportional to 84,969.90, 127,446.56 and 25,806.08

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Solution

The fourth proportional to 84,969.90, 127,446.56 and 25,806.08 is: 38,706.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,969.90 : 127,446.56 = 25,806.08 : x
  2. Step 2: Convert to fraction form
    84,969.90/127,446.56 = 25,806.08/x
  3. Step 3: Cross multiply
    84,969.90x = 127,446.56 × 25,806.08
  4. Step 4: Simplify right side
    84,969.90x = 3,288,895,356.82
  5. Step 5: Solve for x
    x = 3,288,895,356.82/84,969.90
  6. Step 6: Final answer
    x = 38,706.59

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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.