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Finding the Fourth Proportional to 1,970,394.31, 2,719,143.43 and 1,064,976.31

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Solution

The fourth proportional to 1,970,394.31, 2,719,143.43 and 1,064,976.31 is: 1,469,666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970,394.31 : 2,719,143.43 = 1,064,976.31 : x
  2. Step 2: Convert to fraction form
    1,970,394.31/2,719,143.43 = 1,064,976.31/x
  3. Step 3: Cross multiply
    1,970,394.31x = 2,719,143.43 × 1,064,976.31
  4. Step 4: Simplify right side
    1,970,394.31x = 2,895,823,336,442.14
  5. Step 5: Solve for x
    x = 2,895,823,336,442.14/1,970,394.31
  6. Step 6: Final answer
    x = 1,469,666.92

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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.