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Finding the Fourth Proportional to 93,431.90, 140,064.53 and 34,253.78

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Solution

The fourth proportional to 93,431.90, 140,064.53 and 34,253.78 is: 51,350.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,431.90 : 140,064.53 = 34,253.78 : x
  2. Step 2: Convert to fraction form
    93,431.90/140,064.53 = 34,253.78/x
  3. Step 3: Cross multiply
    93,431.90x = 140,064.53 × 34,253.78
  4. Step 4: Simplify right side
    93,431.90x = 4,797,738,724.83
  5. Step 5: Solve for x
    x = 4,797,738,724.83/93,431.90
  6. Step 6: Final answer
    x = 51,350.11

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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.