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Finding the Fourth Proportional to 68,663.97, 102,980.16 and 26,549.64

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Solution

The fourth proportional to 68,663.97, 102,980.16 and 26,549.64 is: 39,818.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,663.97 : 102,980.16 = 26,549.64 : x
  2. Step 2: Convert to fraction form
    68,663.97/102,980.16 = 26,549.64/x
  3. Step 3: Cross multiply
    68,663.97x = 102,980.16 × 26,549.64
  4. Step 4: Simplify right side
    68,663.97x = 2,734,086,175.14
  5. Step 5: Solve for x
    x = 2,734,086,175.14/68,663.97
  6. Step 6: Final answer
    x = 39,818.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.