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Finding the Fourth Proportional to 398,605.49, 597,806.03 and 118,057.13

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Solution

The fourth proportional to 398,605.49, 597,806.03 and 118,057.13 is: 177,055.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,605.49 : 597,806.03 = 118,057.13 : x
  2. Step 2: Convert to fraction form
    398,605.49/597,806.03 = 118,057.13/x
  3. Step 3: Cross multiply
    398,605.49x = 597,806.03 × 118,057.13
  4. Step 4: Simplify right side
    398,605.49x = 70,575,261,504.61
  5. Step 5: Solve for x
    x = 70,575,261,504.61/398,605.49
  6. Step 6: Final answer
    x = 177,055.42

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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.