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Finding the Fourth Proportional to 454,923, 627,793.74 and 253,719

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Solution

The fourth proportional to 454,923, 627,793.74 and 253,719 is: 350,132.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,923 : 627,793.74 = 253,719 : x
  2. Step 2: Convert to fraction form
    454,923/627,793.74 = 253,719/x
  3. Step 3: Cross multiply
    454,923x = 627,793.74 × 253,719
  4. Step 4: Simplify right side
    454,923x = 159,283,199,919.06
  5. Step 5: Solve for x
    x = 159,283,199,919.06/454,923
  6. Step 6: Final answer
    x = 350,132.22

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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.