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Finding the Fourth Proportional to 7,091.70, 10,636.17 and 2,708.11

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Solution

The fourth proportional to 7,091.70, 10,636.17 and 2,708.11 is: 4,061.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.70 : 10,636.17 = 2,708.11 : x
  2. Step 2: Convert to fraction form
    7,091.70/10,636.17 = 2,708.11/x
  3. Step 3: Cross multiply
    7,091.70x = 10,636.17 × 2,708.11
  4. Step 4: Simplify right side
    7,091.70x = 28,803,918.34
  5. Step 5: Solve for x
    x = 28,803,918.34/7,091.70
  6. Step 6: Final answer
    x = 4,061.64

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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.