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Finding the Fourth Proportional to 17,041.79, 23,509.42 and 10,990.43

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Solution

The fourth proportional to 17,041.79, 23,509.42 and 10,990.43 is: 15,161.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,041.79 : 23,509.42 = 10,990.43 : x
  2. Step 2: Convert to fraction form
    17,041.79/23,509.42 = 10,990.43/x
  3. Step 3: Cross multiply
    17,041.79x = 23,509.42 × 10,990.43
  4. Step 4: Simplify right side
    17,041.79x = 258,378,634.85
  5. Step 5: Solve for x
    x = 258,378,634.85/17,041.79
  6. Step 6: Final answer
    x = 15,161.48

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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.