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Finding the Fourth Proportional to 492,720.86, 679,903.80 and 363,727.82

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Solution

The fourth proportional to 492,720.86, 679,903.80 and 363,727.82 is: 501,906.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,720.86 : 679,903.80 = 363,727.82 : x
  2. Step 2: Convert to fraction form
    492,720.86/679,903.80 = 363,727.82/x
  3. Step 3: Cross multiply
    492,720.86x = 679,903.80 × 363,727.82
  4. Step 4: Simplify right side
    492,720.86x = 247,299,926,983.72
  5. Step 5: Solve for x
    x = 247,299,926,983.72/492,720.86
  6. Step 6: Final answer
    x = 501,906.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.