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Finding the Fourth Proportional to 6,992.66, 10,479.68 and 2,605.70

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Solution

The fourth proportional to 6,992.66, 10,479.68 and 2,605.70 is: 3,905.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,992.66 : 10,479.68 = 2,605.70 : x
  2. Step 2: Convert to fraction form
    6,992.66/10,479.68 = 2,605.70/x
  3. Step 3: Cross multiply
    6,992.66x = 10,479.68 × 2,605.70
  4. Step 4: Simplify right side
    6,992.66x = 27,306,925.12
  5. Step 5: Solve for x
    x = 27,306,925.12/6,992.66
  6. Step 6: Final answer
    x = 3,905.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.