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Finding the Fourth Proportional to 393,703.93, 590,649.96 and 127,464.73

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Solution

The fourth proportional to 393,703.93, 590,649.96 and 127,464.73 is: 191,227.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,703.93 : 590,649.96 = 127,464.73 : x
  2. Step 2: Convert to fraction form
    393,703.93/590,649.96 = 127,464.73/x
  3. Step 3: Cross multiply
    393,703.93x = 590,649.96 × 127,464.73
  4. Step 4: Simplify right side
    393,703.93x = 75,287,037,675.91
  5. Step 5: Solve for x
    x = 75,287,037,675.91/393,703.93
  6. Step 6: Final answer
    x = 191,227.55

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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.