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Finding the Fourth Proportional to 18,242.56, 25,174.64 and 9,859.04

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Solution

The fourth proportional to 18,242.56, 25,174.64 and 9,859.04 is: 13,605.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,242.56 : 25,174.64 = 9,859.04 : x
  2. Step 2: Convert to fraction form
    18,242.56/25,174.64 = 9,859.04/x
  3. Step 3: Cross multiply
    18,242.56x = 25,174.64 × 9,859.04
  4. Step 4: Simplify right side
    18,242.56x = 248,197,782.75
  5. Step 5: Solve for x
    x = 248,197,782.75/18,242.56
  6. Step 6: Final answer
    x = 13,605.43

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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.