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Finding the Fourth Proportional to 393,868.44, 543,352.32 and 232,615.80

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Solution

The fourth proportional to 393,868.44, 543,352.32 and 232,615.80 is: 320,899.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,868.44 : 543,352.32 = 232,615.80 : x
  2. Step 2: Convert to fraction form
    393,868.44/543,352.32 = 232,615.80/x
  3. Step 3: Cross multiply
    393,868.44x = 543,352.32 × 232,615.80
  4. Step 4: Simplify right side
    393,868.44x = 126,392,334,598.66
  5. Step 5: Solve for x
    x = 126,392,334,598.66/393,868.44
  6. Step 6: Final answer
    x = 320,899.88

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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.