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Finding the Fourth Proportional to 243,354.52, 365,044.77 and 74,990.48

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Solution

The fourth proportional to 243,354.52, 365,044.77 and 74,990.48 is: 112,489.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,354.52 : 365,044.77 = 74,990.48 : x
  2. Step 2: Convert to fraction form
    243,354.52/365,044.77 = 74,990.48/x
  3. Step 3: Cross multiply
    243,354.52x = 365,044.77 × 74,990.48
  4. Step 4: Simplify right side
    243,354.52x = 27,374,883,436.40
  5. Step 5: Solve for x
    x = 27,374,883,436.40/243,354.52
  6. Step 6: Final answer
    x = 112,489.73

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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.