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Finding the Fourth Proportional to 247,136.50, 340,129.02 and 203,769.10

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Solution

The fourth proportional to 247,136.50, 340,129.02 and 203,769.10 is: 280,443.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,136.50 : 340,129.02 = 203,769.10 : x
  2. Step 2: Convert to fraction form
    247,136.50/340,129.02 = 203,769.10/x
  3. Step 3: Cross multiply
    247,136.50x = 340,129.02 × 203,769.10
  4. Step 4: Simplify right side
    247,136.50x = 69,307,784,289.28
  5. Step 5: Solve for x
    x = 69,307,784,289.28/247,136.50
  6. Step 6: Final answer
    x = 280,443.34

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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.