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Finding the Fourth Proportional to 1,998,905.45, 2,997,029.57 and 1,100,770.16

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Solution

The fourth proportional to 1,998,905.45, 2,997,029.57 and 1,100,770.16 is: 1,650,423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,905.45 : 2,997,029.57 = 1,100,770.16 : x
  2. Step 2: Convert to fraction form
    1,998,905.45/2,997,029.57 = 1,100,770.16/x
  3. Step 3: Cross multiply
    1,998,905.45x = 2,997,029.57 × 1,100,770.16
  4. Step 4: Simplify right side
    1,998,905.45x = 3,299,040,698,804.63
  5. Step 5: Solve for x
    x = 3,299,040,698,804.63/1,998,905.45
  6. Step 6: Final answer
    x = 1,650,423.59

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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.