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Finding the Fourth Proportional to 37,939.49, 56,915.40 and 14,248.88

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Solution

The fourth proportional to 37,939.49, 56,915.40 and 14,248.88 is: 21,375.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,939.49 : 56,915.40 = 14,248.88 : x
  2. Step 2: Convert to fraction form
    37,939.49/56,915.40 = 14,248.88/x
  3. Step 3: Cross multiply
    37,939.49x = 56,915.40 × 14,248.88
  4. Step 4: Simplify right side
    37,939.49x = 810,980,420.18
  5. Step 5: Solve for x
    x = 810,980,420.18/37,939.49
  6. Step 6: Final answer
    x = 21,375.63

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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.