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Finding the Fourth Proportional to 92,336.80, 138,528.56 and 25,776.88

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Solution

The fourth proportional to 92,336.80, 138,528.56 and 25,776.88 is: 38,671.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,336.80 : 138,528.56 = 25,776.88 : x
  2. Step 2: Convert to fraction form
    92,336.80/138,528.56 = 25,776.88/x
  3. Step 3: Cross multiply
    92,336.80x = 138,528.56 × 25,776.88
  4. Step 4: Simplify right side
    92,336.80x = 3,570,834,067.69
  5. Step 5: Solve for x
    x = 3,570,834,067.69/92,336.80
  6. Step 6: Final answer
    x = 38,671.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.