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Finding the Fourth Proportional to 9,255.47, 12,774.92 and 5,716.65

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Solution

The fourth proportional to 9,255.47, 12,774.92 and 5,716.65 is: 7,890.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,255.47 : 12,774.92 = 5,716.65 : x
  2. Step 2: Convert to fraction form
    9,255.47/12,774.92 = 5,716.65/x
  3. Step 3: Cross multiply
    9,255.47x = 12,774.92 × 5,716.65
  4. Step 4: Simplify right side
    9,255.47x = 73,029,717.83
  5. Step 5: Solve for x
    x = 73,029,717.83/9,255.47
  6. Step 6: Final answer
    x = 7,890.44

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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.