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Finding the Fourth Proportional to 25,815.06, 38,721.78 and 7,347.06

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Solution

The fourth proportional to 25,815.06, 38,721.78 and 7,347.06 is: 11,020.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,815.06 : 38,721.78 = 7,347.06 : x
  2. Step 2: Convert to fraction form
    25,815.06/38,721.78 = 7,347.06/x
  3. Step 3: Cross multiply
    25,815.06x = 38,721.78 × 7,347.06
  4. Step 4: Simplify right side
    25,815.06x = 284,491,240.97
  5. Step 5: Solve for x
    x = 284,491,240.97/25,815.06
  6. Step 6: Final answer
    x = 11,020.36

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1.5x scale

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.