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Finding the Fourth Proportional to 222,428.76, 306,973.76 and 126,949.87

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Solution

The fourth proportional to 222,428.76, 306,973.76 and 126,949.87 is: 175,203.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,428.76 : 306,973.76 = 126,949.87 : x
  2. Step 2: Convert to fraction form
    222,428.76/306,973.76 = 126,949.87/x
  3. Step 3: Cross multiply
    222,428.76x = 306,973.76 × 126,949.87
  4. Step 4: Simplify right side
    222,428.76x = 38,970,278,925.41
  5. Step 5: Solve for x
    x = 38,970,278,925.41/222,428.76
  6. Step 6: Final answer
    x = 175,203.42

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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.