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Finding the Fourth Proportional to 562,391.56, 775,396.36 and 469,390.80

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Solution

The fourth proportional to 562,391.56, 775,396.36 and 469,390.80 is: 647,171.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,391.56 : 775,396.36 = 469,390.80 : x
  2. Step 2: Convert to fraction form
    562,391.56/775,396.36 = 469,390.80/x
  3. Step 3: Cross multiply
    562,391.56x = 775,396.36 × 469,390.80
  4. Step 4: Simplify right side
    562,391.56x = 363,963,917,737.49
  5. Step 5: Solve for x
    x = 363,963,917,737.49/562,391.56
  6. Step 6: Final answer
    x = 647,171.73

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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.