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Finding the Fourth Proportional to 118,053.78, 162,914.34 and 64,338.84

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Solution

The fourth proportional to 118,053.78, 162,914.34 and 64,338.84 is: 88,787.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,053.78 : 162,914.34 = 64,338.84 : x
  2. Step 2: Convert to fraction form
    118,053.78/162,914.34 = 64,338.84/x
  3. Step 3: Cross multiply
    118,053.78x = 162,914.34 × 64,338.84
  4. Step 4: Simplify right side
    118,053.78x = 10,481,719,654.97
  5. Step 5: Solve for x
    x = 10,481,719,654.97/118,053.78
  6. Step 6: Final answer
    x = 88,787.67

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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.