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Finding the Fourth Proportional to 18,399.66, 25,391.53 and 10,016.16

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Solution

The fourth proportional to 18,399.66, 25,391.53 and 10,016.16 is: 13,822.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399.66 : 25,391.53 = 10,016.16 : x
  2. Step 2: Convert to fraction form
    18,399.66/25,391.53 = 10,016.16/x
  3. Step 3: Cross multiply
    18,399.66x = 25,391.53 × 10,016.16
  4. Step 4: Simplify right side
    18,399.66x = 254,325,488.09
  5. Step 5: Solve for x
    x = 254,325,488.09/18,399.66
  6. Step 6: Final answer
    x = 13,822.30

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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.