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Finding the Fourth Proportional to 694,344.80, 1,041,574.80 and 221,016.80

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Solution

The fourth proportional to 694,344.80, 1,041,574.80 and 221,016.80 is: 331,543.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,344.80 : 1,041,574.80 = 221,016.80 : x
  2. Step 2: Convert to fraction form
    694,344.80/1,041,574.80 = 221,016.80/x
  3. Step 3: Cross multiply
    694,344.80x = 1,041,574.80 × 221,016.80
  4. Step 4: Simplify right side
    694,344.80x = 230,205,529,256.64
  5. Step 5: Solve for x
    x = 230,205,529,256.64/694,344.80
  6. Step 6: Final answer
    x = 331,543.53

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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.