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Finding the Fourth Proportional to 633,981.73, 874,984.50 and 392,342.11

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Solution

The fourth proportional to 633,981.73, 874,984.50 and 392,342.11 is: 541,487.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,981.73 : 874,984.50 = 392,342.11 : x
  2. Step 2: Convert to fraction form
    633,981.73/874,984.50 = 392,342.11/x
  3. Step 3: Cross multiply
    633,981.73x = 874,984.50 × 392,342.11
  4. Step 4: Simplify right side
    633,981.73x = 343,293,264,947.30
  5. Step 5: Solve for x
    x = 343,293,264,947.30/633,981.73
  6. Step 6: Final answer
    x = 541,487.63

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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.