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Finding the Fourth Proportional to 93,313.50, 140,670.11 and 91,913.82

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Solution

The fourth proportional to 93,313.50, 140,670.11 and 91,913.82 is: 138,560.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,313.50 : 140,670.11 = 91,913.82 : x
  2. Step 2: Convert to fraction form
    93,313.50/140,670.11 = 91,913.82/x
  3. Step 3: Cross multiply
    93,313.50x = 140,670.11 × 91,913.82
  4. Step 4: Simplify right side
    93,313.50x = 12,929,526,710.35
  5. Step 5: Solve for x
    x = 12,929,526,710.35/93,313.50
  6. Step 6: Final answer
    x = 138,560.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.