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Finding the Fourth Proportional to 8,716.71, 13,081.55 and 4,828.71

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Solution

The fourth proportional to 8,716.71, 13,081.55 and 4,828.71 is: 7,246.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.71 : 13,081.55 = 4,828.71 : x
  2. Step 2: Convert to fraction form
    8,716.71/13,081.55 = 4,828.71/x
  3. Step 3: Cross multiply
    8,716.71x = 13,081.55 × 4,828.71
  4. Step 4: Simplify right side
    8,716.71x = 63,166,987.16
  5. Step 5: Solve for x
    x = 63,166,987.16/8,716.71
  6. Step 6: Final answer
    x = 7,246.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.