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Finding the Fourth Proportional to 328,912.56, 453,898.56 and 178,009.68

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Solution

The fourth proportional to 328,912.56, 453,898.56 and 178,009.68 is: 245,652.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,912.56 : 453,898.56 = 178,009.68 : x
  2. Step 2: Convert to fraction form
    328,912.56/453,898.56 = 178,009.68/x
  3. Step 3: Cross multiply
    328,912.56x = 453,898.56 × 178,009.68
  4. Step 4: Simplify right side
    328,912.56x = 80,798,337,418.06
  5. Step 5: Solve for x
    x = 80,798,337,418.06/328,912.56
  6. Step 6: Final answer
    x = 245,652.94

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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.