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Finding the Fourth Proportional to 328,889.28, 453,866.40 and 177,988.80

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Solution

The fourth proportional to 328,889.28, 453,866.40 and 177,988.80 is: 245,624.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,889.28 : 453,866.40 = 177,988.80 : x
  2. Step 2: Convert to fraction form
    328,889.28/453,866.40 = 177,988.80/x
  3. Step 3: Cross multiply
    328,889.28x = 453,866.40 × 177,988.80
  4. Step 4: Simplify right side
    328,889.28x = 80,783,135,896.32
  5. Step 5: Solve for x
    x = 80,783,135,896.32/328,889.28
  6. Step 6: Final answer
    x = 245,624.11

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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.