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Finding the Fourth Proportional to 343,659.90, 515,536.70 and 199,633.40

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Solution

The fourth proportional to 343,659.90, 515,536.70 and 199,633.40 is: 299,477.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,659.90 : 515,536.70 = 199,633.40 : x
  2. Step 2: Convert to fraction form
    343,659.90/515,536.70 = 199,633.40/x
  3. Step 3: Cross multiply
    343,659.90x = 515,536.70 × 199,633.40
  4. Step 4: Simplify right side
    343,659.90x = 102,918,344,245.78
  5. Step 5: Solve for x
    x = 102,918,344,245.78/343,659.90
  6. Step 6: Final answer
    x = 299,477.32

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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.