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Finding the Fourth Proportional to 334,661.82, 501,989.63 and 81,943.44

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Solution

The fourth proportional to 334,661.82, 501,989.63 and 81,943.44 is: 122,914.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,661.82 : 501,989.63 = 81,943.44 : x
  2. Step 2: Convert to fraction form
    334,661.82/501,989.63 = 81,943.44/x
  3. Step 3: Cross multiply
    334,661.82x = 501,989.63 × 81,943.44
  4. Step 4: Simplify right side
    334,661.82x = 41,134,756,716.81
  5. Step 5: Solve for x
    x = 41,134,756,716.81/334,661.82
  6. Step 6: Final answer
    x = 122,914.40

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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.