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Finding the Fourth Proportional to 393,955.38, 590,846.67 and 113,411.70

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Solution

The fourth proportional to 393,955.38, 590,846.67 and 113,411.70 is: 170,092.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,955.38 : 590,846.67 = 113,411.70 : x
  2. Step 2: Convert to fraction form
    393,955.38/590,846.67 = 113,411.70/x
  3. Step 3: Cross multiply
    393,955.38x = 590,846.67 × 113,411.70
  4. Step 4: Simplify right side
    393,955.38x = 67,008,925,284.04
  5. Step 5: Solve for x
    x = 67,008,925,284.04/393,955.38
  6. Step 6: Final answer
    x = 170,092.68

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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.