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Finding the Fourth Proportional to 7,016.21, 9,679.31 and 4,623.11

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Solution

The fourth proportional to 7,016.21, 9,679.31 and 4,623.11 is: 6,377.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,016.21 : 9,679.31 = 4,623.11 : x
  2. Step 2: Convert to fraction form
    7,016.21/9,679.31 = 4,623.11/x
  3. Step 3: Cross multiply
    7,016.21x = 9,679.31 × 4,623.11
  4. Step 4: Simplify right side
    7,016.21x = 44,748,514.85
  5. Step 5: Solve for x
    x = 44,748,514.85/7,016.21
  6. Step 6: Final answer
    x = 6,377.88

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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.