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Finding the Fourth Proportional to 118,053.76, 162,914.40 and 64,338.75

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Solution

The fourth proportional to 118,053.76, 162,914.40 and 64,338.75 is: 88,787.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,053.76 : 162,914.40 = 64,338.75 : x
  2. Step 2: Convert to fraction form
    118,053.76/162,914.40 = 64,338.75/x
  3. Step 3: Cross multiply
    118,053.76x = 162,914.40 × 64,338.75
  4. Step 4: Simplify right side
    118,053.76x = 10,481,708,853
  5. Step 5: Solve for x
    x = 10,481,708,853/118,053.76
  6. Step 6: Final answer
    x = 88,787.59

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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.