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Finding the Fourth Proportional to 610,524.80, 915,599.76 and 422,195.39

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Solution

The fourth proportional to 610,524.80, 915,599.76 and 422,195.39 is: 633,163.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,524.80 : 915,599.76 = 422,195.39 : x
  2. Step 2: Convert to fraction form
    610,524.80/915,599.76 = 422,195.39/x
  3. Step 3: Cross multiply
    610,524.80x = 915,599.76 × 422,195.39
  4. Step 4: Simplify right side
    610,524.80x = 386,562,003,741.90
  5. Step 5: Solve for x
    x = 386,562,003,741.90/610,524.80
  6. Step 6: Final answer
    x = 633,163.48

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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.