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Finding the Fourth Proportional to 68,062.55, 93,912.55 and 39,762.77

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Solution

The fourth proportional to 68,062.55, 93,912.55 and 39,762.77 is: 54,864.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,062.55 : 93,912.55 = 39,762.77 : x
  2. Step 2: Convert to fraction form
    68,062.55/93,912.55 = 39,762.77/x
  3. Step 3: Cross multiply
    68,062.55x = 93,912.55 × 39,762.77
  4. Step 4: Simplify right side
    68,062.55x = 3,734,222,556.79
  5. Step 5: Solve for x
    x = 3,734,222,556.79/68,062.55
  6. Step 6: Final answer
    x = 54,864.57

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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.