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Finding the Fourth Proportional to 17,189.72, 25,779.18 and 6,659.01

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Solution

The fourth proportional to 17,189.72, 25,779.18 and 6,659.01 is: 9,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,189.72 : 25,779.18 = 6,659.01 : x
  2. Step 2: Convert to fraction form
    17,189.72/25,779.18 = 6,659.01/x
  3. Step 3: Cross multiply
    17,189.72x = 25,779.18 × 6,659.01
  4. Step 4: Simplify right side
    17,189.72x = 171,663,817.41
  5. Step 5: Solve for x
    x = 171,663,817.41/17,189.72
  6. Step 6: Final answer
    x = 9,986.43

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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.