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Finding the Fourth Proportional to 117,865.68, 162,654.63 and 64,151.08

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Solution

The fourth proportional to 117,865.68, 162,654.63 and 64,151.08 is: 88,528.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,865.68 : 162,654.63 = 64,151.08 : x
  2. Step 2: Convert to fraction form
    117,865.68/162,654.63 = 64,151.08/x
  3. Step 3: Cross multiply
    117,865.68x = 162,654.63 × 64,151.08
  4. Step 4: Simplify right side
    117,865.68x = 10,434,469,860.75
  5. Step 5: Solve for x
    x = 10,434,469,860.75/117,865.68
  6. Step 6: Final answer
    x = 88,528.48

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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.