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Finding the Fourth Proportional to 395,777.61, 593,721.90 and 129,559.23

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Solution

The fourth proportional to 395,777.61, 593,721.90 and 129,559.23 is: 194,357.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,777.61 : 593,721.90 = 129,559.23 : x
  2. Step 2: Convert to fraction form
    395,777.61/593,721.90 = 129,559.23/x
  3. Step 3: Cross multiply
    395,777.61x = 593,721.90 × 129,559.23
  4. Step 4: Simplify right side
    395,777.61x = 76,922,152,198.14
  5. Step 5: Solve for x
    x = 76,922,152,198.14/395,777.61
  6. Step 6: Final answer
    x = 194,357.01

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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.