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Finding the Fourth Proportional to 633,806.78, 874,648.26 and 347,326.11

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Solution

The fourth proportional to 633,806.78, 874,648.26 and 347,326.11 is: 479,307.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,806.78 : 874,648.26 = 347,326.11 : x
  2. Step 2: Convert to fraction form
    633,806.78/874,648.26 = 347,326.11/x
  3. Step 3: Cross multiply
    633,806.78x = 874,648.26 × 347,326.11
  4. Step 4: Simplify right side
    633,806.78x = 303,788,177,764.07
  5. Step 5: Solve for x
    x = 303,788,177,764.07/633,806.78
  6. Step 6: Final answer
    x = 479,307.24

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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.