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Finding the Fourth Proportional to 18,597.66, 25,664.79 and 10,099.78

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Solution

The fourth proportional to 18,597.66, 25,664.79 and 10,099.78 is: 13,937.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.66 : 25,664.79 = 10,099.78 : x
  2. Step 2: Convert to fraction form
    18,597.66/25,664.79 = 10,099.78/x
  3. Step 3: Cross multiply
    18,597.66x = 25,664.79 × 10,099.78
  4. Step 4: Simplify right side
    18,597.66x = 259,208,732.75
  5. Step 5: Solve for x
    x = 259,208,732.75/18,597.66
  6. Step 6: Final answer
    x = 13,937.71

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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.