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Finding the Fourth Proportional to 633,911.02, 874,757.55 and 347,410.78

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Solution

The fourth proportional to 633,911.02, 874,757.55 and 347,410.78 is: 479,405.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,911.02 : 874,757.55 = 347,410.78 : x
  2. Step 2: Convert to fraction form
    633,911.02/874,757.55 = 347,410.78/x
  3. Step 3: Cross multiply
    633,911.02x = 874,757.55 × 347,410.78
  4. Step 4: Simplify right side
    633,911.02x = 303,900,202,756.39
  5. Step 5: Solve for x
    x = 303,900,202,756.39/633,911.02
  6. Step 6: Final answer
    x = 479,405.14

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1.5x scale

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.