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Finding the Fourth Proportional to 18,966.62, 28,449.98 and 6,495.65

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Solution

The fourth proportional to 18,966.62, 28,449.98 and 6,495.65 is: 9,743.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,966.62 : 28,449.98 = 6,495.65 : x
  2. Step 2: Convert to fraction form
    18,966.62/28,449.98 = 6,495.65/x
  3. Step 3: Cross multiply
    18,966.62x = 28,449.98 × 6,495.65
  4. Step 4: Simplify right side
    18,966.62x = 184,800,937.86
  5. Step 5: Solve for x
    x = 184,800,937.86/18,966.62
  6. Step 6: Final answer
    x = 9,743.49

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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.