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Finding the Fourth Proportional to 13,015.14, 17,960.88 and 7,046.81

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Solution

The fourth proportional to 13,015.14, 17,960.88 and 7,046.81 is: 9,724.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.14 : 17,960.88 = 7,046.81 : x
  2. Step 2: Convert to fraction form
    13,015.14/17,960.88 = 7,046.81/x
  3. Step 3: Cross multiply
    13,015.14x = 17,960.88 × 7,046.81
  4. Step 4: Simplify right side
    13,015.14x = 126,566,908.79
  5. Step 5: Solve for x
    x = 126,566,908.79/13,015.14
  6. Step 6: Final answer
    x = 9,724.59

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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.