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Finding the Fourth Proportional to 67,246.90, 100,870.35 and 17,998.90

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Solution

The fourth proportional to 67,246.90, 100,870.35 and 17,998.90 is: 26,998.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,246.90 : 100,870.35 = 17,998.90 : x
  2. Step 2: Convert to fraction form
    67,246.90/100,870.35 = 17,998.90/x
  3. Step 3: Cross multiply
    67,246.90x = 100,870.35 × 17,998.90
  4. Step 4: Simplify right side
    67,246.90x = 1,815,555,342.62
  5. Step 5: Solve for x
    x = 1,815,555,342.62/67,246.90
  6. Step 6: Final answer
    x = 26,998.35

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Similar ratio
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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.