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Finding the Fourth Proportional to 2,440.76, 3,661.50 and 709.16

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Solution

The fourth proportional to 2,440.76, 3,661.50 and 709.16 is: 1,063.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,440.76 : 3,661.50 = 709.16 : x
  2. Step 2: Convert to fraction form
    2,440.76/3,661.50 = 709.16/x
  3. Step 3: Cross multiply
    2,440.76x = 3,661.50 × 709.16
  4. Step 4: Simplify right side
    2,440.76x = 2,596,589.34
  5. Step 5: Solve for x
    x = 2,596,589.34/2,440.76
  6. Step 6: Final answer
    x = 1,063.84

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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.