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Finding the Fourth Proportional to 92,466.40, 138,764.40 and 39,913.60

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Solution

The fourth proportional to 92,466.40, 138,764.40 and 39,913.60 is: 59,898.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,466.40 : 138,764.40 = 39,913.60 : x
  2. Step 2: Convert to fraction form
    92,466.40/138,764.40 = 39,913.60/x
  3. Step 3: Cross multiply
    92,466.40x = 138,764.40 × 39,913.60
  4. Step 4: Simplify right side
    92,466.40x = 5,538,586,755.84
  5. Step 5: Solve for x
    x = 5,538,586,755.84/92,466.40
  6. Step 6: Final answer
    x = 59,898.37

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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.