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Finding the Fourth Proportional to 18,671.79, 25,767.68 and 10,174.58

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Solution

The fourth proportional to 18,671.79, 25,767.68 and 10,174.58 is: 14,041.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.79 : 25,767.68 = 10,174.58 : x
  2. Step 2: Convert to fraction form
    18,671.79/25,767.68 = 10,174.58/x
  3. Step 3: Cross multiply
    18,671.79x = 25,767.68 × 10,174.58
  4. Step 4: Simplify right side
    18,671.79x = 262,175,321.57
  5. Step 5: Solve for x
    x = 262,175,321.57/18,671.79
  6. Step 6: Final answer
    x = 14,041.26

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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.