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Finding the Fourth Proportional to 719,611.14, 993,078.87 and 397,341.66

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Solution

The fourth proportional to 719,611.14, 993,078.87 and 397,341.66 is: 548,340.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,611.14 : 993,078.87 = 397,341.66 : x
  2. Step 2: Convert to fraction form
    719,611.14/993,078.87 = 397,341.66/x
  3. Step 3: Cross multiply
    719,611.14x = 993,078.87 × 397,341.66
  4. Step 4: Simplify right side
    719,611.14x = 394,591,606,716.72
  5. Step 5: Solve for x
    x = 394,591,606,716.72/719,611.14
  6. Step 6: Final answer
    x = 548,340.05

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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.