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Finding the Fourth Proportional to 6,670.67, 9,205.41 and 3,686.63

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Solution

The fourth proportional to 6,670.67, 9,205.41 and 3,686.63 is: 5,087.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,670.67 : 9,205.41 = 3,686.63 : x
  2. Step 2: Convert to fraction form
    6,670.67/9,205.41 = 3,686.63/x
  3. Step 3: Cross multiply
    6,670.67x = 9,205.41 × 3,686.63
  4. Step 4: Simplify right side
    6,670.67x = 33,936,894.64
  5. Step 5: Solve for x
    x = 33,936,894.64/6,670.67
  6. Step 6: Final answer
    x = 5,087.48

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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.