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Finding the Fourth Proportional to 19,009.65, 28,530.68 and 8,495.85

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Solution

The fourth proportional to 19,009.65, 28,530.68 and 8,495.85 is: 12,751.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,009.65 : 28,530.68 = 8,495.85 : x
  2. Step 2: Convert to fraction form
    19,009.65/28,530.68 = 8,495.85/x
  3. Step 3: Cross multiply
    19,009.65x = 28,530.68 × 8,495.85
  4. Step 4: Simplify right side
    19,009.65x = 242,392,335.20
  5. Step 5: Solve for x
    x = 242,392,335.20/19,009.65
  6. Step 6: Final answer
    x = 12,751.02

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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.