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Finding the Fourth Proportional to 18,808.88, 25,955.28 and 10,310.48

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Solution

The fourth proportional to 18,808.88, 25,955.28 and 10,310.48 is: 14,227.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.88 : 25,955.28 = 10,310.48 : x
  2. Step 2: Convert to fraction form
    18,808.88/25,955.28 = 10,310.48/x
  3. Step 3: Cross multiply
    18,808.88x = 25,955.28 × 10,310.48
  4. Step 4: Simplify right side
    18,808.88x = 267,611,395.33
  5. Step 5: Solve for x
    x = 267,611,395.33/18,808.88
  6. Step 6: Final answer
    x = 14,227.93

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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.