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Finding the Fourth Proportional to 8,670.88, 11,965.76 and 4,691.96

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Solution

The fourth proportional to 8,670.88, 11,965.76 and 4,691.96 is: 6,474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.88 : 11,965.76 = 4,691.96 : x
  2. Step 2: Convert to fraction form
    8,670.88/11,965.76 = 4,691.96/x
  3. Step 3: Cross multiply
    8,670.88x = 11,965.76 × 4,691.96
  4. Step 4: Simplify right side
    8,670.88x = 56,142,846.47
  5. Step 5: Solve for x
    x = 56,142,846.47/8,670.88
  6. Step 6: Final answer
    x = 6,474.87

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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.