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Finding the Fourth Proportional to 118,114.80, 162,998.52 and 64,399.92

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Solution

The fourth proportional to 118,114.80, 162,998.52 and 64,399.92 is: 88,871.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,114.80 : 162,998.52 = 64,399.92 : x
  2. Step 2: Convert to fraction form
    118,114.80/162,998.52 = 64,399.92/x
  3. Step 3: Cross multiply
    118,114.80x = 162,998.52 × 64,399.92
  4. Step 4: Simplify right side
    118,114.80x = 10,497,091,648.12
  5. Step 5: Solve for x
    x = 10,497,091,648.12/118,114.80
  6. Step 6: Final answer
    x = 88,871.94

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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.