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Finding the Fourth Proportional to 399,653.08, 599,465.68 and 100,136.20

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Solution

The fourth proportional to 399,653.08, 599,465.68 and 100,136.20 is: 150,200.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,653.08 : 599,465.68 = 100,136.20 : x
  2. Step 2: Convert to fraction form
    399,653.08/599,465.68 = 100,136.20/x
  3. Step 3: Cross multiply
    399,653.08x = 599,465.68 × 100,136.20
  4. Step 4: Simplify right side
    399,653.08x = 60,028,215,225.62
  5. Step 5: Solve for x
    x = 60,028,215,225.62/399,653.08
  6. Step 6: Final answer
    x = 150,200.81

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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.