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Finding the Fourth Proportional to 9,767.66, 13,479.62 and 5,788.13

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Solution

The fourth proportional to 9,767.66, 13,479.62 and 5,788.13 is: 7,987.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,767.66 : 13,479.62 = 5,788.13 : x
  2. Step 2: Convert to fraction form
    9,767.66/13,479.62 = 5,788.13/x
  3. Step 3: Cross multiply
    9,767.66x = 13,479.62 × 5,788.13
  4. Step 4: Simplify right side
    9,767.66x = 78,021,696.57
  5. Step 5: Solve for x
    x = 78,021,696.57/9,767.66
  6. Step 6: Final answer
    x = 7,987.76

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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.