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Finding the Fourth Proportional to 328,680, 453,579.21 and 177,777

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Solution

The fourth proportional to 328,680, 453,579.21 and 177,777 is: 245,332.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,680 : 453,579.21 = 177,777 : x
  2. Step 2: Convert to fraction form
    328,680/453,579.21 = 177,777/x
  3. Step 3: Cross multiply
    328,680x = 453,579.21 × 177,777
  4. Step 4: Simplify right side
    328,680x = 80,635,951,216.17
  5. Step 5: Solve for x
    x = 80,635,951,216.17/328,680
  6. Step 6: Final answer
    x = 245,332.70

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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.