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Finding the Fourth Proportional to 19,051.66, 28,579.92 and 7,966

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Solution

The fourth proportional to 19,051.66, 28,579.92 and 7,966 is: 11,950.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,051.66 : 28,579.92 = 7,966 : x
  2. Step 2: Convert to fraction form
    19,051.66/28,579.92 = 7,966/x
  3. Step 3: Cross multiply
    19,051.66x = 28,579.92 × 7,966
  4. Step 4: Simplify right side
    19,051.66x = 227,667,642.72
  5. Step 5: Solve for x
    x = 227,667,642.72/19,051.66
  6. Step 6: Final answer
    x = 11,950.02

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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.