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Finding the Fourth Proportional to 238,839.84, 358,237.89 and 81,050.22

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Solution

The fourth proportional to 238,839.84, 358,237.89 and 81,050.22 is: 121,567.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,839.84 : 358,237.89 = 81,050.22 : x
  2. Step 2: Convert to fraction form
    238,839.84/358,237.89 = 81,050.22/x
  3. Step 3: Cross multiply
    238,839.84x = 358,237.89 × 81,050.22
  4. Step 4: Simplify right side
    238,839.84x = 29,035,259,796.84
  5. Step 5: Solve for x
    x = 29,035,259,796.84/238,839.84
  6. Step 6: Final answer
    x = 121,567.91

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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.