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Finding the Fourth Proportional to 343,885.20, 515,827.80 and 250,573.20

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Solution

The fourth proportional to 343,885.20, 515,827.80 and 250,573.20 is: 375,859.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,885.20 : 515,827.80 = 250,573.20 : x
  2. Step 2: Convert to fraction form
    343,885.20/515,827.80 = 250,573.20/x
  3. Step 3: Cross multiply
    343,885.20x = 515,827.80 × 250,573.20
  4. Step 4: Simplify right side
    343,885.20x = 129,252,622,494.96
  5. Step 5: Solve for x
    x = 129,252,622,494.96/343,885.20
  6. Step 6: Final answer
    x = 375,859.80

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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.