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Finding the Fourth Proportional to 8,769.58, 12,101.58 and 4,789.96

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Solution

The fourth proportional to 8,769.58, 12,101.58 and 4,789.96 is: 6,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,769.58 : 12,101.58 = 4,789.96 : x
  2. Step 2: Convert to fraction form
    8,769.58/12,101.58 = 4,789.96/x
  3. Step 3: Cross multiply
    8,769.58x = 12,101.58 × 4,789.96
  4. Step 4: Simplify right side
    8,769.58x = 57,966,084.14
  5. Step 5: Solve for x
    x = 57,966,084.14/8,769.58
  6. Step 6: Final answer
    x = 6,609.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.