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Finding the Fourth Proportional to 18,176.40, 25,083 and 11,888.64

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Solution

The fourth proportional to 18,176.40, 25,083 and 11,888.64 is: 16,406.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,176.40 : 25,083 = 11,888.64 : x
  2. Step 2: Convert to fraction form
    18,176.40/25,083 = 11,888.64/x
  3. Step 3: Cross multiply
    18,176.40x = 25,083 × 11,888.64
  4. Step 4: Simplify right side
    18,176.40x = 298,202,757.12
  5. Step 5: Solve for x
    x = 298,202,757.12/18,176.40
  6. Step 6: Final answer
    x = 16,406.04

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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.