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Finding the Fourth Proportional to 545,753.22, 753,137.55 and 304,021.50

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Solution

The fourth proportional to 545,753.22, 753,137.55 and 304,021.50 is: 419,548.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,753.22 : 753,137.55 = 304,021.50 : x
  2. Step 2: Convert to fraction form
    545,753.22/753,137.55 = 304,021.50/x
  3. Step 3: Cross multiply
    545,753.22x = 753,137.55 × 304,021.50
  4. Step 4: Simplify right side
    545,753.22x = 228,970,007,657.33
  5. Step 5: Solve for x
    x = 228,970,007,657.33/545,753.22
  6. Step 6: Final answer
    x = 419,548.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.