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Finding the Fourth Proportional to 633,977.73, 874,978.97 and 392,338.13

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Solution

The fourth proportional to 633,977.73, 874,978.97 and 392,338.13 is: 541,482.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,977.73 : 874,978.97 = 392,338.13 : x
  2. Step 2: Convert to fraction form
    633,977.73/874,978.97 = 392,338.13/x
  3. Step 3: Cross multiply
    633,977.73x = 874,978.97 × 392,338.13
  4. Step 4: Simplify right side
    633,977.73x = 343,287,606,542.54
  5. Step 5: Solve for x
    x = 343,287,606,542.54/633,977.73
  6. Step 6: Final answer
    x = 541,482.12

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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.