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Finding the Fourth Proportional to 18,824.36, 25,978.12 and 10,326.88

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Solution

The fourth proportional to 18,824.36, 25,978.12 and 10,326.88 is: 14,251.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,824.36 : 25,978.12 = 10,326.88 : x
  2. Step 2: Convert to fraction form
    18,824.36/25,978.12 = 10,326.88/x
  3. Step 3: Cross multiply
    18,824.36x = 25,978.12 × 10,326.88
  4. Step 4: Simplify right side
    18,824.36x = 268,272,927.87
  5. Step 5: Solve for x
    x = 268,272,927.87/18,824.36
  6. Step 6: Final answer
    x = 14,251.37

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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.