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Finding the Fourth Proportional to 335,403.90, 501,793.65 and 217,305.90

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Solution

The fourth proportional to 335,403.90, 501,793.65 and 217,305.90 is: 325,108.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,403.90 : 501,793.65 = 217,305.90 : x
  2. Step 2: Convert to fraction form
    335,403.90/501,793.65 = 217,305.90/x
  3. Step 3: Cross multiply
    335,403.90x = 501,793.65 × 217,305.90
  4. Step 4: Simplify right side
    335,403.90x = 109,042,720,727.54
  5. Step 5: Solve for x
    x = 109,042,720,727.54/335,403.90
  6. Step 6: Final answer
    x = 325,108.68

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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.