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Finding the Fourth Proportional to 6,991.66, 9,648.30 and 3,804.82

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Solution

The fourth proportional to 6,991.66, 9,648.30 and 3,804.82 is: 5,250.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.66 : 9,648.30 = 3,804.82 : x
  2. Step 2: Convert to fraction form
    6,991.66/9,648.30 = 3,804.82/x
  3. Step 3: Cross multiply
    6,991.66x = 9,648.30 × 3,804.82
  4. Step 4: Simplify right side
    6,991.66x = 36,710,044.81
  5. Step 5: Solve for x
    x = 36,710,044.81/6,991.66
  6. Step 6: Final answer
    x = 5,250.55

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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.