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Finding the Fourth Proportional to 19,104.66, 28,646.66 and 6,623.78

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Solution

The fourth proportional to 19,104.66, 28,646.66 and 6,623.78 is: 9,932.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,104.66 : 28,646.66 = 6,623.78 : x
  2. Step 2: Convert to fraction form
    19,104.66/28,646.66 = 6,623.78/x
  3. Step 3: Cross multiply
    19,104.66x = 28,646.66 × 6,623.78
  4. Step 4: Simplify right side
    19,104.66x = 189,749,046.90
  5. Step 5: Solve for x
    x = 189,749,046.90/19,104.66
  6. Step 6: Final answer
    x = 9,932.08

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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.