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Finding the Fourth Proportional to 18,127.99, 25,016.54 and 10,170.25

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Solution

The fourth proportional to 18,127.99, 25,016.54 and 10,170.25 is: 14,034.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,127.99 : 25,016.54 = 10,170.25 : x
  2. Step 2: Convert to fraction form
    18,127.99/25,016.54 = 10,170.25/x
  3. Step 3: Cross multiply
    18,127.99x = 25,016.54 × 10,170.25
  4. Step 4: Simplify right side
    18,127.99x = 254,424,465.94
  5. Step 5: Solve for x
    x = 254,424,465.94/18,127.99
  6. Step 6: Final answer
    x = 14,034.90

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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.