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Finding the Fourth Proportional to 61,968.84, 93,018.78 and 38,611.68

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Solution

The fourth proportional to 61,968.84, 93,018.78 and 38,611.68 is: 57,958.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,968.84 : 93,018.78 = 38,611.68 : x
  2. Step 2: Convert to fraction form
    61,968.84/93,018.78 = 38,611.68/x
  3. Step 3: Cross multiply
    61,968.84x = 93,018.78 × 38,611.68
  4. Step 4: Simplify right side
    61,968.84x = 3,591,611,367.35
  5. Step 5: Solve for x
    x = 3,591,611,367.35/61,968.84
  6. Step 6: Final answer
    x = 57,958.34

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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.