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Finding the Fourth Proportional to 93,099.92, 128,491.18 and 52,268.36

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Solution

The fourth proportional to 93,099.92, 128,491.18 and 52,268.36 is: 72,137.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,099.92 : 128,491.18 = 52,268.36 : x
  2. Step 2: Convert to fraction form
    93,099.92/128,491.18 = 52,268.36/x
  3. Step 3: Cross multiply
    93,099.92x = 128,491.18 × 52,268.36
  4. Step 4: Simplify right side
    93,099.92x = 6,716,022,479.94
  5. Step 5: Solve for x
    x = 6,716,022,479.94/93,099.92
  6. Step 6: Final answer
    x = 72,137.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.