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Finding the Fourth Proportional to 1,972,640.16, 2,711,793.38 and 1,695,978.77

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Solution

The fourth proportional to 1,972,640.16, 2,711,793.38 and 1,695,978.77 is: 2,331,466.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972,640.16 : 2,711,793.38 = 1,695,978.77 : x
  2. Step 2: Convert to fraction form
    1,972,640.16/2,711,793.38 = 1,695,978.77/x
  3. Step 3: Cross multiply
    1,972,640.16x = 2,711,793.38 × 1,695,978.77
  4. Step 4: Simplify right side
    1,972,640.16x = 4,599,143,979,067.68
  5. Step 5: Solve for x
    x = 4,599,143,979,067.68/1,972,640.16
  6. Step 6: Final answer
    x = 2,331,466.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.