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Finding the Fourth Proportional to 19,332.08, 28,998.12 and 5,479.28

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Solution

The fourth proportional to 19,332.08, 28,998.12 and 5,479.28 is: 8,218.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,332.08 : 28,998.12 = 5,479.28 : x
  2. Step 2: Convert to fraction form
    19,332.08/28,998.12 = 5,479.28/x
  3. Step 3: Cross multiply
    19,332.08x = 28,998.12 × 5,479.28
  4. Step 4: Simplify right side
    19,332.08x = 158,888,818.95
  5. Step 5: Solve for x
    x = 158,888,818.95/19,332.08
  6. Step 6: Final answer
    x = 8,218.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.