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Finding the Fourth Proportional to 112,963.63, 155,889.90 and 62,662.63

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Solution

The fourth proportional to 112,963.63, 155,889.90 and 62,662.63 is: 86,474.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,963.63 : 155,889.90 = 62,662.63 : x
  2. Step 2: Convert to fraction form
    112,963.63/155,889.90 = 62,662.63/x
  3. Step 3: Cross multiply
    112,963.63x = 155,889.90 × 62,662.63
  4. Step 4: Simplify right side
    112,963.63x = 9,768,471,124.44
  5. Step 5: Solve for x
    x = 9,768,471,124.44/112,963.63
  6. Step 6: Final answer
    x = 86,474.48

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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.