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Finding the Fourth Proportional to 1,976,603.12, 2,728,004.82 and 1,251,518.12

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Solution

The fourth proportional to 1,976,603.12, 2,728,004.82 and 1,251,518.12 is: 1,727,280.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976,603.12 : 2,728,004.82 = 1,251,518.12 : x
  2. Step 2: Convert to fraction form
    1,976,603.12/2,728,004.82 = 1,251,518.12/x
  3. Step 3: Cross multiply
    1,976,603.12x = 2,728,004.82 × 1,251,518.12
  4. Step 4: Simplify right side
    1,976,603.12x = 3,414,147,463,677.34
  5. Step 5: Solve for x
    x = 3,414,147,463,677.34/1,976,603.12
  6. Step 6: Final answer
    x = 1,727,280.22

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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.