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Finding the Fourth Proportional to 93,353.86, 128,791.65 and 57,481.66

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Solution

The fourth proportional to 93,353.86, 128,791.65 and 57,481.66 is: 79,302.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,353.86 : 128,791.65 = 57,481.66 : x
  2. Step 2: Convert to fraction form
    93,353.86/128,791.65 = 57,481.66/x
  3. Step 3: Cross multiply
    93,353.86x = 128,791.65 × 57,481.66
  4. Step 4: Simplify right side
    93,353.86x = 7,403,157,836.14
  5. Step 5: Solve for x
    x = 7,403,157,836.14/93,353.86
  6. Step 6: Final answer
    x = 79,302.11

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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.