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Finding the Fourth Proportional to 328,909.20, 453,894.96 and 178,006.32

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Solution

The fourth proportional to 328,909.20, 453,894.96 and 178,006.32 is: 245,648.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,909.20 : 453,894.96 = 178,006.32 : x
  2. Step 2: Convert to fraction form
    328,909.20/453,894.96 = 178,006.32/x
  3. Step 3: Cross multiply
    328,909.20x = 453,894.96 × 178,006.32
  4. Step 4: Simplify right side
    328,909.20x = 80,796,171,496.15
  5. Step 5: Solve for x
    x = 80,796,171,496.15/328,909.20
  6. Step 6: Final answer
    x = 245,648.86

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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.