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Finding the Fourth Proportional to 633,871.75, 874,749.91 and 347,385.69

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Solution

The fourth proportional to 633,871.75, 874,749.91 and 347,385.69 is: 479,396.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,871.75 : 874,749.91 = 347,385.69 : x
  2. Step 2: Convert to fraction form
    633,871.75/874,749.91 = 347,385.69/x
  3. Step 3: Cross multiply
    633,871.75x = 874,749.91 × 347,385.69
  4. Step 4: Simplify right side
    633,871.75x = 303,875,601,062.79
  5. Step 5: Solve for x
    x = 303,875,601,062.79/633,871.75
  6. Step 6: Final answer
    x = 479,396.03

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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.