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Finding the Fourth Proportional to 6,995.72, 9,654.22 and 3,809.11

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Solution

The fourth proportional to 6,995.72, 9,654.22 and 3,809.11 is: 5,256.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,995.72 : 9,654.22 = 3,809.11 : x
  2. Step 2: Convert to fraction form
    6,995.72/9,654.22 = 3,809.11/x
  3. Step 3: Cross multiply
    6,995.72x = 9,654.22 × 3,809.11
  4. Step 4: Simplify right side
    6,995.72x = 36,773,985.94
  5. Step 5: Solve for x
    x = 36,773,985.94/6,995.72
  6. Step 6: Final answer
    x = 5,256.64

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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.