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Finding the Fourth Proportional to 62,902.31, 86,790.94 and 45,915.81

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Solution

The fourth proportional to 62,902.31, 86,790.94 and 45,915.81 is: 63,353.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,902.31 : 86,790.94 = 45,915.81 : x
  2. Step 2: Convert to fraction form
    62,902.31/86,790.94 = 45,915.81/x
  3. Step 3: Cross multiply
    62,902.31x = 86,790.94 × 45,915.81
  4. Step 4: Simplify right side
    62,902.31x = 3,985,076,310.76
  5. Step 5: Solve for x
    x = 3,985,076,310.76/62,902.31
  6. Step 6: Final answer
    x = 63,353.42

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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.