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Finding the Fourth Proportional to 4,805.76, 6,629.42 and 3,910.51

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Solution

The fourth proportional to 4,805.76, 6,629.42 and 3,910.51 is: 5,394.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,805.76 : 6,629.42 = 3,910.51 : x
  2. Step 2: Convert to fraction form
    4,805.76/6,629.42 = 3,910.51/x
  3. Step 3: Cross multiply
    4,805.76x = 6,629.42 × 3,910.51
  4. Step 4: Simplify right side
    4,805.76x = 25,924,406.41
  5. Step 5: Solve for x
    x = 25,924,406.41/4,805.76
  6. Step 6: Final answer
    x = 5,394.44

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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.