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Finding the Fourth Proportional to 386,462.80, 579,694.20 and 334,622.80

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Solution

The fourth proportional to 386,462.80, 579,694.20 and 334,622.80 is: 501,934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,462.80 : 579,694.20 = 334,622.80 : x
  2. Step 2: Convert to fraction form
    386,462.80/579,694.20 = 334,622.80/x
  3. Step 3: Cross multiply
    386,462.80x = 579,694.20 × 334,622.80
  4. Step 4: Simplify right side
    386,462.80x = 193,978,896,347.76
  5. Step 5: Solve for x
    x = 193,978,896,347.76/386,462.80
  6. Step 6: Final answer
    x = 501,934.20

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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.