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Finding the Fourth Proportional to 18,666.63, 25,724.52 and 13,352.22

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Solution

The fourth proportional to 18,666.63, 25,724.52 and 13,352.22 is: 18,400.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.63 : 25,724.52 = 13,352.22 : x
  2. Step 2: Convert to fraction form
    18,666.63/25,724.52 = 13,352.22/x
  3. Step 3: Cross multiply
    18,666.63x = 25,724.52 × 13,352.22
  4. Step 4: Simplify right side
    18,666.63x = 343,479,450.43
  5. Step 5: Solve for x
    x = 343,479,450.43/18,666.63
  6. Step 6: Final answer
    x = 18,400.72

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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.