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Finding the Fourth Proportional to 66,963.48, 92,177.64 and 57,884.64

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Solution

The fourth proportional to 66,963.48, 92,177.64 and 57,884.64 is: 79,680.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,963.48 : 92,177.64 = 57,884.64 : x
  2. Step 2: Convert to fraction form
    66,963.48/92,177.64 = 57,884.64/x
  3. Step 3: Cross multiply
    66,963.48x = 92,177.64 × 57,884.64
  4. Step 4: Simplify right side
    66,963.48x = 5,335,669,507.45
  5. Step 5: Solve for x
    x = 5,335,669,507.45/66,963.48
  6. Step 6: Final answer
    x = 79,680.29

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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.