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Finding the Fourth Proportional to 633,872.88, 874,751.28 and 347,386.68

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Solution

The fourth proportional to 633,872.88, 874,751.28 and 347,386.68 is: 479,397.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,872.88 : 874,751.28 = 347,386.68 : x
  2. Step 2: Convert to fraction form
    633,872.88/874,751.28 = 347,386.68/x
  3. Step 3: Cross multiply
    633,872.88x = 874,751.28 × 347,386.68
  4. Step 4: Simplify right side
    633,872.88x = 303,876,942,984.95
  5. Step 5: Solve for x
    x = 303,876,942,984.95/633,872.88
  6. Step 6: Final answer
    x = 479,397.29

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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.