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Finding the Fourth Proportional to 18,243.17, 25,175.62 and 9,859.67

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Solution

The fourth proportional to 18,243.17, 25,175.62 and 9,859.67 is: 13,606.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,243.17 : 25,175.62 = 9,859.67 : x
  2. Step 2: Convert to fraction form
    18,243.17/25,175.62 = 9,859.67/x
  3. Step 3: Cross multiply
    18,243.17x = 25,175.62 × 9,859.67
  4. Step 4: Simplify right side
    18,243.17x = 248,223,380.51
  5. Step 5: Solve for x
    x = 248,223,380.51/18,243.17
  6. Step 6: Final answer
    x = 13,606.37

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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.