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Finding the Fourth Proportional to 19,060.17, 28,585.08 and 7,964.54

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Solution

The fourth proportional to 19,060.17, 28,585.08 and 7,964.54 is: 11,944.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,060.17 : 28,585.08 = 7,964.54 : x
  2. Step 2: Convert to fraction form
    19,060.17/28,585.08 = 7,964.54/x
  3. Step 3: Cross multiply
    19,060.17x = 28,585.08 × 7,964.54
  4. Step 4: Simplify right side
    19,060.17x = 227,667,013.06
  5. Step 5: Solve for x
    x = 227,667,013.06/19,060.17
  6. Step 6: Final answer
    x = 11,944.65

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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.