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Finding the Fourth Proportional to 93,602.78, 129,171.60 and 51,161.61

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Solution

The fourth proportional to 93,602.78, 129,171.60 and 51,161.61 is: 70,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,602.78 : 129,171.60 = 51,161.61 : x
  2. Step 2: Convert to fraction form
    93,602.78/129,171.60 = 51,161.61/x
  3. Step 3: Cross multiply
    93,602.78x = 129,171.60 × 51,161.61
  4. Step 4: Simplify right side
    93,602.78x = 6,608,627,022.28
  5. Step 5: Solve for x
    x = 6,608,627,022.28/93,602.78
  6. Step 6: Final answer
    x = 70,602.90

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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.