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Finding the Fourth Proportional to 17,091.75, 25,637.63 and 4,779.75

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Solution

The fourth proportional to 17,091.75, 25,637.63 and 4,779.75 is: 7,169.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,091.75 : 25,637.63 = 4,779.75 : x
  2. Step 2: Convert to fraction form
    17,091.75/25,637.63 = 4,779.75/x
  3. Step 3: Cross multiply
    17,091.75x = 25,637.63 × 4,779.75
  4. Step 4: Simplify right side
    17,091.75x = 122,541,461.99
  5. Step 5: Solve for x
    x = 122,541,461.99/17,091.75
  6. Step 6: Final answer
    x = 7,169.63

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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.