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Finding the Fourth Proportional to 626,655.22, 864,542.01 and 354,660.78

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Solution

The fourth proportional to 626,655.22, 864,542.01 and 354,660.78 is: 489,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,655.22 : 864,542.01 = 354,660.78 : x
  2. Step 2: Convert to fraction form
    626,655.22/864,542.01 = 354,660.78/x
  3. Step 3: Cross multiply
    626,655.22x = 864,542.01 × 354,660.78
  4. Step 4: Simplify right side
    626,655.22x = 306,619,139,286.66
  5. Step 5: Solve for x
    x = 306,619,139,286.66/626,655.22
  6. Step 6: Final answer
    x = 489,294.80

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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.