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Finding the Fourth Proportional to 391,232.40, 585,536.40 and 343,993.20

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Solution

The fourth proportional to 391,232.40, 585,536.40 and 343,993.20 is: 514,836.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,232.40 : 585,536.40 = 343,993.20 : x
  2. Step 2: Convert to fraction form
    391,232.40/585,536.40 = 343,993.20/x
  3. Step 3: Cross multiply
    391,232.40x = 585,536.40 × 343,993.20
  4. Step 4: Simplify right side
    391,232.40x = 201,420,539,952.48
  5. Step 5: Solve for x
    x = 201,420,539,952.48/391,232.40
  6. Step 6: Final answer
    x = 514,836.04

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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.