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Finding the Fourth Proportional to 67,220.30, 100,780.98 and 22,835.12

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Solution

The fourth proportional to 67,220.30, 100,780.98 and 22,835.12 is: 34,235.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,220.30 : 100,780.98 = 22,835.12 : x
  2. Step 2: Convert to fraction form
    67,220.30/100,780.98 = 22,835.12/x
  3. Step 3: Cross multiply
    67,220.30x = 100,780.98 × 22,835.12
  4. Step 4: Simplify right side
    67,220.30x = 2,301,345,772.02
  5. Step 5: Solve for x
    x = 2,301,345,772.02/67,220.30
  6. Step 6: Final answer
    x = 34,235.87

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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.