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Finding the Fourth Proportional to 18,672.63, 25,768.23 and 10,174.75

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Solution

The fourth proportional to 18,672.63, 25,768.23 and 10,174.75 is: 14,041.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.63 : 25,768.23 = 10,174.75 : x
  2. Step 2: Convert to fraction form
    18,672.63/25,768.23 = 10,174.75/x
  3. Step 3: Cross multiply
    18,672.63x = 25,768.23 × 10,174.75
  4. Step 4: Simplify right side
    18,672.63x = 262,185,373.64
  5. Step 5: Solve for x
    x = 262,185,373.64/18,672.63
  6. Step 6: Final answer
    x = 14,041.16

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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.