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Finding the Fourth Proportional to 16,999.20, 25,486.65 and 7,631.55

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Solution

The fourth proportional to 16,999.20, 25,486.65 and 7,631.55 is: 11,441.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,999.20 : 25,486.65 = 7,631.55 : x
  2. Step 2: Convert to fraction form
    16,999.20/25,486.65 = 7,631.55/x
  3. Step 3: Cross multiply
    16,999.20x = 25,486.65 × 7,631.55
  4. Step 4: Simplify right side
    16,999.20x = 194,502,643.81
  5. Step 5: Solve for x
    x = 194,502,643.81/16,999.20
  6. Step 6: Final answer
    x = 11,441.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.