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Finding the Fourth Proportional to 529,310.50, 793,965.75 and 135,326.50

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Solution

The fourth proportional to 529,310.50, 793,965.75 and 135,326.50 is: 202,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,310.50 : 793,965.75 = 135,326.50 : x
  2. Step 2: Convert to fraction form
    529,310.50/793,965.75 = 135,326.50/x
  3. Step 3: Cross multiply
    529,310.50x = 793,965.75 × 135,326.50
  4. Step 4: Simplify right side
    529,310.50x = 107,444,606,067.38
  5. Step 5: Solve for x
    x = 107,444,606,067.38/529,310.50
  6. Step 6: Final answer
    x = 202,989.75

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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.