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Finding the Fourth Proportional to 333,993.49, 500,991.26 and 81,274.02

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Solution

The fourth proportional to 333,993.49, 500,991.26 and 81,274.02 is: 121,911.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,993.49 : 500,991.26 = 81,274.02 : x
  2. Step 2: Convert to fraction form
    333,993.49/500,991.26 = 81,274.02/x
  3. Step 3: Cross multiply
    333,993.49x = 500,991.26 × 81,274.02
  4. Step 4: Simplify right side
    333,993.49x = 40,717,573,685.07
  5. Step 5: Solve for x
    x = 40,717,573,685.07/333,993.49
  6. Step 6: Final answer
    x = 121,911.28

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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.