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Finding the Fourth Proportional to 3,223.13, 4,834.76 and 914.63

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Solution

The fourth proportional to 3,223.13, 4,834.76 and 914.63 is: 1,371.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,223.13 : 4,834.76 = 914.63 : x
  2. Step 2: Convert to fraction form
    3,223.13/4,834.76 = 914.63/x
  3. Step 3: Cross multiply
    3,223.13x = 4,834.76 × 914.63
  4. Step 4: Simplify right side
    3,223.13x = 4,421,987.79
  5. Step 5: Solve for x
    x = 4,421,987.79/3,223.13
  6. Step 6: Final answer
    x = 1,371.96

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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.