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Finding the Fourth Proportional to 393,273.90, 589,910.85 and 156,786.30

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Solution

The fourth proportional to 393,273.90, 589,910.85 and 156,786.30 is: 235,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,273.90 : 589,910.85 = 156,786.30 : x
  2. Step 2: Convert to fraction form
    393,273.90/589,910.85 = 156,786.30/x
  3. Step 3: Cross multiply
    393,273.90x = 589,910.85 × 156,786.30
  4. Step 4: Simplify right side
    393,273.90x = 92,489,939,501.36
  5. Step 5: Solve for x
    x = 92,489,939,501.36/393,273.90
  6. Step 6: Final answer
    x = 235,179.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.