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Finding the Fourth Proportional to 18,367.22, 25,346.72 and 9,983.72

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Solution

The fourth proportional to 18,367.22, 25,346.72 and 9,983.72 is: 13,777.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,367.22 : 25,346.72 = 9,983.72 : x
  2. Step 2: Convert to fraction form
    18,367.22/25,346.72 = 9,983.72/x
  3. Step 3: Cross multiply
    18,367.22x = 25,346.72 × 9,983.72
  4. Step 4: Simplify right side
    18,367.22x = 253,054,643.72
  5. Step 5: Solve for x
    x = 253,054,643.72/18,367.22
  6. Step 6: Final answer
    x = 13,777.51

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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.