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Finding the Fourth Proportional to 839,201.70, 1,255,850.10 and 768,342.90

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Solution

The fourth proportional to 839,201.70, 1,255,850.10 and 768,342.90 is: 1,149,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,201.70 : 1,255,850.10 = 768,342.90 : x
  2. Step 2: Convert to fraction form
    839,201.70/1,255,850.10 = 768,342.90/x
  3. Step 3: Cross multiply
    839,201.70x = 1,255,850.10 × 768,342.90
  4. Step 4: Simplify right side
    839,201.70x = 964,923,507,799.29
  5. Step 5: Solve for x
    x = 964,923,507,799.29/839,201.70
  6. Step 6: Final answer
    x = 1,149,811.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.