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Finding the Fourth Proportional to 693,944.16, 957,517.92 and 388,026.60

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Solution

The fourth proportional to 693,944.16, 957,517.92 and 388,026.60 is: 535,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,944.16 : 957,517.92 = 388,026.60 : x
  2. Step 2: Convert to fraction form
    693,944.16/957,517.92 = 388,026.60/x
  3. Step 3: Cross multiply
    693,944.16x = 957,517.92 × 388,026.60
  4. Step 4: Simplify right side
    693,944.16x = 371,542,422,936.67
  5. Step 5: Solve for x
    x = 371,542,422,936.67/693,944.16
  6. Step 6: Final answer
    x = 535,406.80

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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.