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Finding the Fourth Proportional to 328,420.86, 453,220.11 and 177,517.50

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Solution

The fourth proportional to 328,420.86, 453,220.11 and 177,517.50 is: 244,973.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,420.86 : 453,220.11 = 177,517.50 : x
  2. Step 2: Convert to fraction form
    328,420.86/453,220.11 = 177,517.50/x
  3. Step 3: Cross multiply
    328,420.86x = 453,220.11 × 177,517.50
  4. Step 4: Simplify right side
    328,420.86x = 80,454,500,876.93
  5. Step 5: Solve for x
    x = 80,454,500,876.93/328,420.86
  6. Step 6: Final answer
    x = 244,973.78

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1.5x scale

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.