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Finding the Fourth Proportional to 93,768.50, 140,652.75 and 28,104.50

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Solution

The fourth proportional to 93,768.50, 140,652.75 and 28,104.50 is: 42,156.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,768.50 : 140,652.75 = 28,104.50 : x
  2. Step 2: Convert to fraction form
    93,768.50/140,652.75 = 28,104.50/x
  3. Step 3: Cross multiply
    93,768.50x = 140,652.75 × 28,104.50
  4. Step 4: Simplify right side
    93,768.50x = 3,952,975,212.38
  5. Step 5: Solve for x
    x = 3,952,975,212.38/93,768.50
  6. Step 6: Final answer
    x = 42,156.75

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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.