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Finding the Fourth Proportional to 68,918.84, 103,329.66 and 26,763.81

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Solution

The fourth proportional to 68,918.84, 103,329.66 and 26,763.81 is: 40,126.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,918.84 : 103,329.66 = 26,763.81 : x
  2. Step 2: Convert to fraction form
    68,918.84/103,329.66 = 26,763.81/x
  3. Step 3: Cross multiply
    68,918.84x = 103,329.66 × 26,763.81
  4. Step 4: Simplify right side
    68,918.84x = 2,765,495,387.60
  5. Step 5: Solve for x
    x = 2,765,495,387.60/68,918.84
  6. Step 6: Final answer
    x = 40,126.84

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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.