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Finding the Fourth Proportional to 92,851.68, 139,219.92 and 30,505.44

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Solution

The fourth proportional to 92,851.68, 139,219.92 and 30,505.44 is: 45,739.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,851.68 : 139,219.92 = 30,505.44 : x
  2. Step 2: Convert to fraction form
    92,851.68/139,219.92 = 30,505.44/x
  3. Step 3: Cross multiply
    92,851.68x = 139,219.92 × 30,505.44
  4. Step 4: Simplify right side
    92,851.68x = 4,246,964,916.36
  5. Step 5: Solve for x
    x = 4,246,964,916.36/92,851.68
  6. Step 6: Final answer
    x = 45,739.24

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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.