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Finding the Fourth Proportional to 68,758.89, 103,116.74 and 26,636.06

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Solution

The fourth proportional to 68,758.89, 103,116.74 and 26,636.06 is: 39,945.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,758.89 : 103,116.74 = 26,636.06 : x
  2. Step 2: Convert to fraction form
    68,758.89/103,116.74 = 26,636.06/x
  3. Step 3: Cross multiply
    68,758.89x = 103,116.74 × 26,636.06
  4. Step 4: Simplify right side
    68,758.89x = 2,746,623,024.88
  5. Step 5: Solve for x
    x = 2,746,623,024.88/68,758.89
  6. Step 6: Final answer
    x = 39,945.72

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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.