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Finding the Fourth Proportional to 8,670.95, 11,965.83 and 4,691.99

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Solution

The fourth proportional to 8,670.95, 11,965.83 and 4,691.99 is: 6,474.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.95 : 11,965.83 = 4,691.99 : x
  2. Step 2: Convert to fraction form
    8,670.95/11,965.83 = 4,691.99/x
  3. Step 3: Cross multiply
    8,670.95x = 11,965.83 × 4,691.99
  4. Step 4: Simplify right side
    8,670.95x = 56,143,554.70
  5. Step 5: Solve for x
    x = 56,143,554.70/8,670.95
  6. Step 6: Final answer
    x = 6,474.90

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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.