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Finding the Fourth Proportional to 8,668.87, 11,962.91 and 4,840.31

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Solution

The fourth proportional to 8,668.87, 11,962.91 and 4,840.31 is: 6,679.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.87 : 11,962.91 = 4,840.31 : x
  2. Step 2: Convert to fraction form
    8,668.87/11,962.91 = 4,840.31/x
  3. Step 3: Cross multiply
    8,668.87x = 11,962.91 × 4,840.31
  4. Step 4: Simplify right side
    8,668.87x = 57,904,226.30
  5. Step 5: Solve for x
    x = 57,904,226.30/8,668.87
  6. Step 6: Final answer
    x = 6,679.56

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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.