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Finding the Fourth Proportional to 611,888.21, 844,356.21 and 353,781.72

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Solution

The fourth proportional to 611,888.21, 844,356.21 and 353,781.72 is: 488,190.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,888.21 : 844,356.21 = 353,781.72 : x
  2. Step 2: Convert to fraction form
    611,888.21/844,356.21 = 353,781.72/x
  3. Step 3: Cross multiply
    611,888.21x = 844,356.21 × 353,781.72
  4. Step 4: Simplify right side
    611,888.21x = 298,717,792,266.48
  5. Step 5: Solve for x
    x = 298,717,792,266.48/611,888.21
  6. Step 6: Final answer
    x = 488,190.15

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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.