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Finding the Fourth Proportional to 17,191.42, 25,782.95 and 7,190.75

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Solution

The fourth proportional to 17,191.42, 25,782.95 and 7,190.75 is: 10,784.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,191.42 : 25,782.95 = 7,190.75 : x
  2. Step 2: Convert to fraction form
    17,191.42/25,782.95 = 7,190.75/x
  3. Step 3: Cross multiply
    17,191.42x = 25,782.95 × 7,190.75
  4. Step 4: Simplify right side
    17,191.42x = 185,398,711.76
  5. Step 5: Solve for x
    x = 185,398,711.76/17,191.42
  6. Step 6: Final answer
    x = 10,784.38

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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.