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Finding the Fourth Proportional to 18,671.84, 25,767.11 and 10,288.34

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Solution

The fourth proportional to 18,671.84, 25,767.11 and 10,288.34 is: 14,197.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.84 : 25,767.11 = 10,288.34 : x
  2. Step 2: Convert to fraction form
    18,671.84/25,767.11 = 10,288.34/x
  3. Step 3: Cross multiply
    18,671.84x = 25,767.11 × 10,288.34
  4. Step 4: Simplify right side
    18,671.84x = 265,100,608.22
  5. Step 5: Solve for x
    x = 265,100,608.22/18,671.84
  6. Step 6: Final answer
    x = 14,197.89

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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.