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Finding the Fourth Proportional to 467,012.70, 644,391.90 and 263,019.93

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Solution

The fourth proportional to 467,012.70, 644,391.90 and 263,019.93 is: 362,919.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,012.70 : 644,391.90 = 263,019.93 : x
  2. Step 2: Convert to fraction form
    467,012.70/644,391.90 = 263,019.93/x
  3. Step 3: Cross multiply
    467,012.70x = 644,391.90 × 263,019.93
  4. Step 4: Simplify right side
    467,012.70x = 169,487,912,430.57
  5. Step 5: Solve for x
    x = 169,487,912,430.57/467,012.70
  6. Step 6: Final answer
    x = 362,919.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.