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Finding the Fourth Proportional to 84,099.44, 126,236.64 and 61,937.84

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Solution

The fourth proportional to 84,099.44, 126,236.64 and 61,937.84 is: 92,971.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,099.44 : 126,236.64 = 61,937.84 : x
  2. Step 2: Convert to fraction form
    84,099.44/126,236.64 = 61,937.84/x
  3. Step 3: Cross multiply
    84,099.44x = 126,236.64 × 61,937.84
  4. Step 4: Simplify right side
    84,099.44x = 7,818,824,810.46
  5. Step 5: Solve for x
    x = 7,818,824,810.46/84,099.44
  6. Step 6: Final answer
    x = 92,971.19

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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.