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Finding the Fourth Proportional to 68,143.14, 101,696.56 and 63,631.10

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Solution

The fourth proportional to 68,143.14, 101,696.56 and 63,631.10 is: 94,962.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,143.14 : 101,696.56 = 63,631.10 : x
  2. Step 2: Convert to fraction form
    68,143.14/101,696.56 = 63,631.10/x
  3. Step 3: Cross multiply
    68,143.14x = 101,696.56 × 63,631.10
  4. Step 4: Simplify right side
    68,143.14x = 6,471,063,979.02
  5. Step 5: Solve for x
    x = 6,471,063,979.02/68,143.14
  6. Step 6: Final answer
    x = 94,962.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.