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Finding the Fourth Proportional to 93,108.42, 128,491.92 and 50,669.28

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Solution

The fourth proportional to 93,108.42, 128,491.92 and 50,669.28 is: 69,924.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,108.42 : 128,491.92 = 50,669.28 : x
  2. Step 2: Convert to fraction form
    93,108.42/128,491.92 = 50,669.28/x
  3. Step 3: Cross multiply
    93,108.42x = 128,491.92 × 50,669.28
  4. Step 4: Simplify right side
    93,108.42x = 6,510,593,072.22
  5. Step 5: Solve for x
    x = 6,510,593,072.22/93,108.42
  6. Step 6: Final answer
    x = 69,924.86

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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.