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Finding the Fourth Proportional to 67,015.26, 100,493.35 and 31,486.68

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Solution

The fourth proportional to 67,015.26, 100,493.35 and 31,486.68 is: 47,216.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,015.26 : 100,493.35 = 31,486.68 : x
  2. Step 2: Convert to fraction form
    67,015.26/100,493.35 = 31,486.68/x
  3. Step 3: Cross multiply
    67,015.26x = 100,493.35 × 31,486.68
  4. Step 4: Simplify right side
    67,015.26x = 3,164,201,874.86
  5. Step 5: Solve for x
    x = 3,164,201,874.86/67,015.26
  6. Step 6: Final answer
    x = 47,216.14

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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.