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Finding the Fourth Proportional to 624,254.22, 861,153.44 and 379,173.76

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Solution

The fourth proportional to 624,254.22, 861,153.44 and 379,173.76 is: 523,067.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,254.22 : 861,153.44 = 379,173.76 : x
  2. Step 2: Convert to fraction form
    624,254.22/861,153.44 = 379,173.76/x
  3. Step 3: Cross multiply
    624,254.22x = 861,153.44 × 379,173.76
  4. Step 4: Simplify right side
    624,254.22x = 326,526,787,781.73
  5. Step 5: Solve for x
    x = 326,526,787,781.73/624,254.22
  6. Step 6: Final answer
    x = 523,067.01

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1.5x scale

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.