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Finding the Fourth Proportional to 51,938.96, 77,915.96 and 16,388.21

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Solution

The fourth proportional to 51,938.96, 77,915.96 and 16,388.21 is: 24,584.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,938.96 : 77,915.96 = 16,388.21 : x
  2. Step 2: Convert to fraction form
    51,938.96/77,915.96 = 16,388.21/x
  3. Step 3: Cross multiply
    51,938.96x = 77,915.96 × 16,388.21
  4. Step 4: Simplify right side
    51,938.96x = 1,276,902,643.31
  5. Step 5: Solve for x
    x = 1,276,902,643.31/51,938.96
  6. Step 6: Final answer
    x = 24,584.68

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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.