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Finding the Fourth Proportional to 68,998.35, 103,497.30 and 19,078.32

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Solution

The fourth proportional to 68,998.35, 103,497.30 and 19,078.32 is: 28,617.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,998.35 : 103,497.30 = 19,078.32 : x
  2. Step 2: Convert to fraction form
    68,998.35/103,497.30 = 19,078.32/x
  3. Step 3: Cross multiply
    68,998.35x = 103,497.30 × 19,078.32
  4. Step 4: Simplify right side
    68,998.35x = 1,974,554,608.54
  5. Step 5: Solve for x
    x = 1,974,554,608.54/68,998.35
  6. Step 6: Final answer
    x = 28,617.42

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1.5x scale

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.