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Finding the Fourth Proportional to 68,065.74, 101,994.66 and 28,601.28

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Solution

The fourth proportional to 68,065.74, 101,994.66 and 28,601.28 is: 42,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,065.74 : 101,994.66 = 28,601.28 : x
  2. Step 2: Convert to fraction form
    68,065.74/101,994.66 = 28,601.28/x
  3. Step 3: Cross multiply
    68,065.74x = 101,994.66 × 28,601.28
  4. Step 4: Simplify right side
    68,065.74x = 2,917,177,829.16
  5. Step 5: Solve for x
    x = 2,917,177,829.16/68,065.74
  6. Step 6: Final answer
    x = 42,858.24

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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.