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Finding the Fourth Proportional to 11,479.74, 15,843.18 and 7,006.48

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Solution

The fourth proportional to 11,479.74, 15,843.18 and 7,006.48 is: 9,669.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.74 : 15,843.18 = 7,006.48 : x
  2. Step 2: Convert to fraction form
    11,479.74/15,843.18 = 7,006.48/x
  3. Step 3: Cross multiply
    11,479.74x = 15,843.18 × 7,006.48
  4. Step 4: Simplify right side
    11,479.74x = 111,004,923.81
  5. Step 5: Solve for x
    x = 111,004,923.81/11,479.74
  6. Step 6: Final answer
    x = 9,669.64

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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.