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Finding the Fourth Proportional to 2,269.76, 3,404.67 and 709.70

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Solution

The fourth proportional to 2,269.76, 3,404.67 and 709.70 is: 1,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.76 : 3,404.67 = 709.70 : x
  2. Step 2: Convert to fraction form
    2,269.76/3,404.67 = 709.70/x
  3. Step 3: Cross multiply
    2,269.76x = 3,404.67 × 709.70
  4. Step 4: Simplify right side
    2,269.76x = 2,416,274.61
  5. Step 5: Solve for x
    x = 2,416,274.61/2,269.76
  6. Step 6: Final answer
    x = 1,064.55

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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.