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Finding the Fourth Proportional to 515,837.30, 773,402.99 and 262,627.79

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Solution

The fourth proportional to 515,837.30, 773,402.99 and 262,627.79 is: 393,761.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,837.30 : 773,402.99 = 262,627.79 : x
  2. Step 2: Convert to fraction form
    515,837.30/773,402.99 = 262,627.79/x
  3. Step 3: Cross multiply
    515,837.30x = 773,402.99 × 262,627.79
  4. Step 4: Simplify right side
    515,837.30x = 203,117,112,862.94
  5. Step 5: Solve for x
    x = 203,117,112,862.94/515,837.30
  6. Step 6: Final answer
    x = 393,761.98

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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.