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Finding the Fourth Proportional to 84,578.53, 116,689.64 and 48,253.88

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Solution

The fourth proportional to 84,578.53, 116,689.64 and 48,253.88 is: 66,573.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,578.53 : 116,689.64 = 48,253.88 : x
  2. Step 2: Convert to fraction form
    84,578.53/116,689.64 = 48,253.88/x
  3. Step 3: Cross multiply
    84,578.53x = 116,689.64 × 48,253.88
  4. Step 4: Simplify right side
    84,578.53x = 5,630,728,336.00
  5. Step 5: Solve for x
    x = 5,630,728,336.00/84,578.53
  6. Step 6: Final answer
    x = 66,573.97

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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.