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Finding the Fourth Proportional to 8,716.91, 13,072.19 and 4,771.07

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Solution

The fourth proportional to 8,716.91, 13,072.19 and 4,771.07 is: 7,154.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.91 : 13,072.19 = 4,771.07 : x
  2. Step 2: Convert to fraction form
    8,716.91/13,072.19 = 4,771.07/x
  3. Step 3: Cross multiply
    8,716.91x = 13,072.19 × 4,771.07
  4. Step 4: Simplify right side
    8,716.91x = 62,368,393.72
  5. Step 5: Solve for x
    x = 62,368,393.72/8,716.91
  6. Step 6: Final answer
    x = 7,154.88

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1.5x scale

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.