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Finding the Fourth Proportional to 25,888.61, 35,738.31 and 19,517.78

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Solution

The fourth proportional to 25,888.61, 35,738.31 and 19,517.78 is: 26,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,888.61 : 35,738.31 = 19,517.78 : x
  2. Step 2: Convert to fraction form
    25,888.61/35,738.31 = 19,517.78/x
  3. Step 3: Cross multiply
    25,888.61x = 35,738.31 × 19,517.78
  4. Step 4: Simplify right side
    25,888.61x = 697,532,472.15
  5. Step 5: Solve for x
    x = 697,532,472.15/25,888.61
  6. Step 6: Final answer
    x = 26,943.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.