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Finding the Fourth Proportional to 333,996.31, 500,995.48 and 81,276.84

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Solution

The fourth proportional to 333,996.31, 500,995.48 and 81,276.84 is: 121,915.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,996.31 : 500,995.48 = 81,276.84 : x
  2. Step 2: Convert to fraction form
    333,996.31/500,995.48 = 81,276.84/x
  3. Step 3: Cross multiply
    333,996.31x = 500,995.48 × 81,276.84
  4. Step 4: Simplify right side
    333,996.31x = 40,719,329,468.68
  5. Step 5: Solve for x
    x = 40,719,329,468.68/333,996.31
  6. Step 6: Final answer
    x = 121,915.51

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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.