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Finding the Fourth Proportional to 19,061.56, 28,603.56 and 7,967.38

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Solution

The fourth proportional to 19,061.56, 28,603.56 and 7,967.38 is: 11,955.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,061.56 : 28,603.56 = 7,967.38 : x
  2. Step 2: Convert to fraction form
    19,061.56/28,603.56 = 7,967.38/x
  3. Step 3: Cross multiply
    19,061.56x = 28,603.56 × 7,967.38
  4. Step 4: Simplify right side
    19,061.56x = 227,895,431.87
  5. Step 5: Solve for x
    x = 227,895,431.87/19,061.56
  6. Step 6: Final answer
    x = 11,955.76

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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.