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Finding the Fourth Proportional to 62,903.72, 86,845.92 and 43,292

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Solution

The fourth proportional to 62,903.72, 86,845.92 and 43,292 is: 59,769.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,903.72 : 86,845.92 = 43,292 : x
  2. Step 2: Convert to fraction form
    62,903.72/86,845.92 = 43,292/x
  3. Step 3: Cross multiply
    62,903.72x = 86,845.92 × 43,292
  4. Step 4: Simplify right side
    62,903.72x = 3,759,733,568.64
  5. Step 5: Solve for x
    x = 3,759,733,568.64/62,903.72
  6. Step 6: Final answer
    x = 59,769.65

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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.