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Finding the Fourth Proportional to 93,052.59, 128,371.39 and 57,221.43

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Solution

The fourth proportional to 93,052.59, 128,371.39 and 57,221.43 is: 78,940.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,052.59 : 128,371.39 = 57,221.43 : x
  2. Step 2: Convert to fraction form
    93,052.59/128,371.39 = 57,221.43/x
  3. Step 3: Cross multiply
    93,052.59x = 128,371.39 × 57,221.43
  4. Step 4: Simplify right side
    93,052.59x = 7,345,594,506.89
  5. Step 5: Solve for x
    x = 7,345,594,506.89/93,052.59
  6. Step 6: Final answer
    x = 78,940.25

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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.