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Finding the Fourth Proportional to 2,199,187.80, 3,298,781.70 and 2,199,187.80

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Solution

The fourth proportional to 2,199,187.80, 3,298,781.70 and 2,199,187.80 is: 3,298,781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199,187.80 : 3,298,781.70 = 2,199,187.80 : x
  2. Step 2: Convert to fraction form
    2,199,187.80/3,298,781.70 = 2,199,187.80/x
  3. Step 3: Cross multiply
    2,199,187.80x = 3,298,781.70 × 2,199,187.80
  4. Step 4: Simplify right side
    2,199,187.80x = 7,254,640,469,503.26
  5. Step 5: Solve for x
    x = 7,254,640,469,503.26/2,199,187.80
  6. Step 6: Final answer
    x = 3,298,781.70

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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.