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Finding the Fourth Proportional to 620,553.43, 856,375.35 and 344,937.16

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Solution

The fourth proportional to 620,553.43, 856,375.35 and 344,937.16 is: 476,019.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,553.43 : 856,375.35 = 344,937.16 : x
  2. Step 2: Convert to fraction form
    620,553.43/856,375.35 = 344,937.16/x
  3. Step 3: Cross multiply
    620,553.43x = 856,375.35 × 344,937.16
  4. Step 4: Simplify right side
    620,553.43x = 295,395,681,123.01
  5. Step 5: Solve for x
    x = 295,395,681,123.01/620,553.43
  6. Step 6: Final answer
    x = 476,019.74

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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.