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Finding the Fourth Proportional to 328,894.20, 453,875.40 and 177,991.20

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Solution

The fourth proportional to 328,894.20, 453,875.40 and 177,991.20 is: 245,628.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,894.20 : 453,875.40 = 177,991.20 : x
  2. Step 2: Convert to fraction form
    328,894.20/453,875.40 = 177,991.20/x
  3. Step 3: Cross multiply
    328,894.20x = 453,875.40 × 177,991.20
  4. Step 4: Simplify right side
    328,894.20x = 80,785,827,096.48
  5. Step 5: Solve for x
    x = 80,785,827,096.48/328,894.20
  6. Step 6: Final answer
    x = 245,628.62

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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.