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Finding the Fourth Proportional to 11,383.68, 15,712.98 and 6,669.48

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Solution

The fourth proportional to 11,383.68, 15,712.98 and 6,669.48 is: 9,205.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,383.68 : 15,712.98 = 6,669.48 : x
  2. Step 2: Convert to fraction form
    11,383.68/15,712.98 = 6,669.48/x
  3. Step 3: Cross multiply
    11,383.68x = 15,712.98 × 6,669.48
  4. Step 4: Simplify right side
    11,383.68x = 104,797,405.85
  5. Step 5: Solve for x
    x = 104,797,405.85/11,383.68
  6. Step 6: Final answer
    x = 9,205.93

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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.