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Finding the Fourth Proportional to 11,479.72, 15,844.66 and 7,493.80

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Solution

The fourth proportional to 11,479.72, 15,844.66 and 7,493.80 is: 10,343.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.72 : 15,844.66 = 7,493.80 : x
  2. Step 2: Convert to fraction form
    11,479.72/15,844.66 = 7,493.80/x
  3. Step 3: Cross multiply
    11,479.72x = 15,844.66 × 7,493.80
  4. Step 4: Simplify right side
    11,479.72x = 118,736,713.11
  5. Step 5: Solve for x
    x = 118,736,713.11/11,479.72
  6. Step 6: Final answer
    x = 10,343.17

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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.