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Finding the Fourth Proportional to 93,846.60, 140,560.92 and 72,642.42

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Solution

The fourth proportional to 93,846.60, 140,560.92 and 72,642.42 is: 108,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,846.60 : 140,560.92 = 72,642.42 : x
  2. Step 2: Convert to fraction form
    93,846.60/140,560.92 = 72,642.42/x
  3. Step 3: Cross multiply
    93,846.60x = 140,560.92 × 72,642.42
  4. Step 4: Simplify right side
    93,846.60x = 10,210,685,386.23
  5. Step 5: Solve for x
    x = 10,210,685,386.23/93,846.60
  6. Step 6: Final answer
    x = 108,801.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.