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Finding the Fourth Proportional to 262,505.80, 393,953.10 and 173,729.80

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Solution

The fourth proportional to 262,505.80, 393,953.10 and 173,729.80 is: 260,723.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,505.80 : 393,953.10 = 173,729.80 : x
  2. Step 2: Convert to fraction form
    262,505.80/393,953.10 = 173,729.80/x
  3. Step 3: Cross multiply
    262,505.80x = 393,953.10 × 173,729.80
  4. Step 4: Simplify right side
    262,505.80x = 68,441,393,272.38
  5. Step 5: Solve for x
    x = 68,441,393,272.38/262,505.80
  6. Step 6: Final answer
    x = 260,723.36

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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.