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Finding the Fourth Proportional to 662,139.78, 993,218.78 and 188,825.19

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Solution

The fourth proportional to 662,139.78, 993,218.78 and 188,825.19 is: 283,240.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,139.78 : 993,218.78 = 188,825.19 : x
  2. Step 2: Convert to fraction form
    662,139.78/993,218.78 = 188,825.19/x
  3. Step 3: Cross multiply
    662,139.78x = 993,218.78 × 188,825.19
  4. Step 4: Simplify right side
    662,139.78x = 187,544,724,845.07
  5. Step 5: Solve for x
    x = 187,544,724,845.07/662,139.78
  6. Step 6: Final answer
    x = 283,240.38

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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.