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Finding the Fourth Proportional to 518,136.30, 777,313.80 and 163,186.20

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Solution

The fourth proportional to 518,136.30, 777,313.80 and 163,186.20 is: 244,813.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,136.30 : 777,313.80 = 163,186.20 : x
  2. Step 2: Convert to fraction form
    518,136.30/777,313.80 = 163,186.20/x
  3. Step 3: Cross multiply
    518,136.30x = 777,313.80 × 163,186.20
  4. Step 4: Simplify right side
    518,136.30x = 126,846,885,229.56
  5. Step 5: Solve for x
    x = 126,846,885,229.56/518,136.30
  6. Step 6: Final answer
    x = 244,813.74

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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.