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Finding the Fourth Proportional to 11,593.67, 15,990.37 and 7,113.65

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Solution

The fourth proportional to 11,593.67, 15,990.37 and 7,113.65 is: 9,811.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,593.67 : 15,990.37 = 7,113.65 : x
  2. Step 2: Convert to fraction form
    11,593.67/15,990.37 = 7,113.65/x
  3. Step 3: Cross multiply
    11,593.67x = 15,990.37 × 7,113.65
  4. Step 4: Simplify right side
    11,593.67x = 113,749,797.81
  5. Step 5: Solve for x
    x = 113,749,797.81/11,593.67
  6. Step 6: Final answer
    x = 9,811.38

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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.