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Finding the Fourth Proportional to 18,964.76, 28,460.08 and 6,652.76

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Solution

The fourth proportional to 18,964.76, 28,460.08 and 6,652.76 is: 9,983.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,964.76 : 28,460.08 = 6,652.76 : x
  2. Step 2: Convert to fraction form
    18,964.76/28,460.08 = 6,652.76/x
  3. Step 3: Cross multiply
    18,964.76x = 28,460.08 × 6,652.76
  4. Step 4: Simplify right side
    18,964.76x = 189,338,081.82
  5. Step 5: Solve for x
    x = 189,338,081.82/18,964.76
  6. Step 6: Final answer
    x = 9,983.68

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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.