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Finding the Fourth Proportional to 13,012.99, 17,958.07 and 7,044.79

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Solution

The fourth proportional to 13,012.99, 17,958.07 and 7,044.79 is: 9,721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.99 : 17,958.07 = 7,044.79 : x
  2. Step 2: Convert to fraction form
    13,012.99/17,958.07 = 7,044.79/x
  3. Step 3: Cross multiply
    13,012.99x = 17,958.07 × 7,044.79
  4. Step 4: Simplify right side
    13,012.99x = 126,510,795.87
  5. Step 5: Solve for x
    x = 126,510,795.87/13,012.99
  6. Step 6: Final answer
    x = 9,721.88

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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.