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Finding the Fourth Proportional to 2,179.86, 3,008.68 and 1,433.89

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Solution

The fourth proportional to 2,179.86, 3,008.68 and 1,433.89 is: 1,979.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.86 : 3,008.68 = 1,433.89 : x
  2. Step 2: Convert to fraction form
    2,179.86/3,008.68 = 1,433.89/x
  3. Step 3: Cross multiply
    2,179.86x = 3,008.68 × 1,433.89
  4. Step 4: Simplify right side
    2,179.86x = 4,314,116.17
  5. Step 5: Solve for x
    x = 4,314,116.17/2,179.86
  6. Step 6: Final answer
    x = 1,979.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.