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Finding the Fourth Proportional to 61,493.40, 92,213.10 and 28,202.40

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Solution

The fourth proportional to 61,493.40, 92,213.10 and 28,202.40 is: 42,291.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,493.40 : 92,213.10 = 28,202.40 : x
  2. Step 2: Convert to fraction form
    61,493.40/92,213.10 = 28,202.40/x
  3. Step 3: Cross multiply
    61,493.40x = 92,213.10 × 28,202.40
  4. Step 4: Simplify right side
    61,493.40x = 2,600,630,731.44
  5. Step 5: Solve for x
    x = 2,600,630,731.44/61,493.40
  6. Step 6: Final answer
    x = 42,291.22

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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.