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Finding the Fourth Proportional to 222,415.74, 306,955.80 and 126,936.90

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Solution

The fourth proportional to 222,415.74, 306,955.80 and 126,936.90 is: 175,185.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,415.74 : 306,955.80 = 126,936.90 : x
  2. Step 2: Convert to fraction form
    222,415.74/306,955.80 = 126,936.90/x
  3. Step 3: Cross multiply
    222,415.74x = 306,955.80 × 126,936.90
  4. Step 4: Simplify right side
    222,415.74x = 38,964,017,689.02
  5. Step 5: Solve for x
    x = 38,964,017,689.02/222,415.74
  6. Step 6: Final answer
    x = 175,185.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.