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Finding the Fourth Proportional to 1,970,396.22, 2,719,151.43 and 1,064,978.22

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Solution

The fourth proportional to 1,970,396.22, 2,719,151.43 and 1,064,978.22 is: 1,469,672.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970,396.22 : 2,719,151.43 = 1,064,978.22 : x
  2. Step 2: Convert to fraction form
    1,970,396.22/2,719,151.43 = 1,064,978.22/x
  3. Step 3: Cross multiply
    1,970,396.22x = 2,719,151.43 × 1,064,978.22
  4. Step 4: Simplify right side
    1,970,396.22x = 2,895,837,049,831.85
  5. Step 5: Solve for x
    x = 2,895,837,049,831.85/1,970,396.22
  6. Step 6: Final answer
    x = 1,469,672.45

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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.