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Finding the Fourth Proportional to 393,607.40, 590,411.10 and 225,062.60

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Solution

The fourth proportional to 393,607.40, 590,411.10 and 225,062.60 is: 337,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,607.40 : 590,411.10 = 225,062.60 : x
  2. Step 2: Convert to fraction form
    393,607.40/590,411.10 = 225,062.60/x
  3. Step 3: Cross multiply
    393,607.40x = 590,411.10 × 225,062.60
  4. Step 4: Simplify right side
    393,607.40x = 132,879,457,234.86
  5. Step 5: Solve for x
    x = 132,879,457,234.86/393,607.40
  6. Step 6: Final answer
    x = 337,593.90

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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.