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Finding the Fourth Proportional to 19,263.68, 28,895.52 and 7,578.08

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Solution

The fourth proportional to 19,263.68, 28,895.52 and 7,578.08 is: 11,367.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,263.68 : 28,895.52 = 7,578.08 : x
  2. Step 2: Convert to fraction form
    19,263.68/28,895.52 = 7,578.08/x
  3. Step 3: Cross multiply
    19,263.68x = 28,895.52 × 7,578.08
  4. Step 4: Simplify right side
    19,263.68x = 218,972,562.20
  5. Step 5: Solve for x
    x = 218,972,562.20/19,263.68
  6. Step 6: Final answer
    x = 11,367.12

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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.