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Finding the Fourth Proportional to 48,506.58, 66,938.09 and 28,375.38

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Solution

The fourth proportional to 48,506.58, 66,938.09 and 28,375.38 is: 39,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,506.58 : 66,938.09 = 28,375.38 : x
  2. Step 2: Convert to fraction form
    48,506.58/66,938.09 = 28,375.38/x
  3. Step 3: Cross multiply
    48,506.58x = 66,938.09 × 28,375.38
  4. Step 4: Simplify right side
    48,506.58x = 1,899,393,740.22
  5. Step 5: Solve for x
    x = 1,899,393,740.22/48,506.58
  6. Step 6: Final answer
    x = 39,157.45

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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.