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Finding the Fourth Proportional to 12,496.65, 17,245.90 and 7,191.48

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Solution

The fourth proportional to 12,496.65, 17,245.90 and 7,191.48 is: 9,924.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,496.65 : 17,245.90 = 7,191.48 : x
  2. Step 2: Convert to fraction form
    12,496.65/17,245.90 = 7,191.48/x
  3. Step 3: Cross multiply
    12,496.65x = 17,245.90 × 7,191.48
  4. Step 4: Simplify right side
    12,496.65x = 124,023,526.95
  5. Step 5: Solve for x
    x = 124,023,526.95/12,496.65
  6. Step 6: Final answer
    x = 9,924.54

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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.