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Finding the Fourth Proportional to 1,970,625.89, 2,719,462.51 and 1,065,207.89

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Solution

The fourth proportional to 1,970,625.89, 2,719,462.51 and 1,065,207.89 is: 1,469,986.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970,625.89 : 2,719,462.51 = 1,065,207.89 : x
  2. Step 2: Convert to fraction form
    1,970,625.89/2,719,462.51 = 1,065,207.89/x
  3. Step 3: Cross multiply
    1,970,625.89x = 2,719,462.51 × 1,065,207.89
  4. Step 4: Simplify right side
    1,970,625.89x = 2,896,792,922,211.20
  5. Step 5: Solve for x
    x = 2,896,792,922,211.20/1,970,625.89
  6. Step 6: Final answer
    x = 1,469,986.23

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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.