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Finding the Fourth Proportional to 92,675.58, 138,905.82 and 42,650.64

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Solution

The fourth proportional to 92,675.58, 138,905.82 and 42,650.64 is: 63,926.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,675.58 : 138,905.82 = 42,650.64 : x
  2. Step 2: Convert to fraction form
    92,675.58/138,905.82 = 42,650.64/x
  3. Step 3: Cross multiply
    92,675.58x = 138,905.82 × 42,650.64
  4. Step 4: Simplify right side
    92,675.58x = 5,924,422,122.72
  5. Step 5: Solve for x
    x = 5,924,422,122.72/92,675.58
  6. Step 6: Final answer
    x = 63,926.46

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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.