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Finding the Fourth Proportional to 622,506.20, 934,196.70 and 398,411.60

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Solution

The fourth proportional to 622,506.20, 934,196.70 and 398,411.60 is: 597,897.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,506.20 : 934,196.70 = 398,411.60 : x
  2. Step 2: Convert to fraction form
    622,506.20/934,196.70 = 398,411.60/x
  3. Step 3: Cross multiply
    622,506.20x = 934,196.70 × 398,411.60
  4. Step 4: Simplify right side
    622,506.20x = 372,194,801,961.72
  5. Step 5: Solve for x
    x = 372,194,801,961.72/622,506.20
  6. Step 6: Final answer
    x = 597,897.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.