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Finding the Fourth Proportional to 1,916,304.72, 2,644,559.60 and 1,100,672.03

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Solution

The fourth proportional to 1,916,304.72, 2,644,559.60 and 1,100,672.03 is: 1,518,961.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916,304.72 : 2,644,559.60 = 1,100,672.03 : x
  2. Step 2: Convert to fraction form
    1,916,304.72/2,644,559.60 = 1,100,672.03/x
  3. Step 3: Cross multiply
    1,916,304.72x = 2,644,559.60 × 1,100,672.03
  4. Step 4: Simplify right side
    1,916,304.72x = 2,910,792,783,387.99
  5. Step 5: Solve for x
    x = 2,910,792,783,387.99/1,916,304.72
  6. Step 6: Final answer
    x = 1,518,961.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.