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Finding the Fourth Proportional to 274,521, 378,579.78 and 179,100.84

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Solution

The fourth proportional to 274,521, 378,579.78 and 179,100.84 is: 246,990.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,521 : 378,579.78 = 179,100.84 : x
  2. Step 2: Convert to fraction form
    274,521/378,579.78 = 179,100.84/x
  3. Step 3: Cross multiply
    274,521x = 378,579.78 × 179,100.84
  4. Step 4: Simplify right side
    274,521x = 67,803,956,605.02
  5. Step 5: Solve for x
    x = 67,803,956,605.02/274,521
  6. Step 6: Final answer
    x = 246,990.05

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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.