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Finding the Fourth Proportional to 18,507.96, 25,540.74 and 10,550.32

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Solution

The fourth proportional to 18,507.96, 25,540.74 and 10,550.32 is: 14,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,507.96 : 25,540.74 = 10,550.32 : x
  2. Step 2: Convert to fraction form
    18,507.96/25,540.74 = 10,550.32/x
  3. Step 3: Cross multiply
    18,507.96x = 25,540.74 × 10,550.32
  4. Step 4: Simplify right side
    18,507.96x = 269,462,916.18
  5. Step 5: Solve for x
    x = 269,462,916.18/18,507.96
  6. Step 6: Final answer
    x = 14,559.30

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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.