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Finding the Fourth Proportional to 1,999,593.72, 2,759,431.77 and 1,081,819.98

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Solution

The fourth proportional to 1,999,593.72, 2,759,431.77 and 1,081,819.98 is: 1,492,907.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999,593.72 : 2,759,431.77 = 1,081,819.98 : x
  2. Step 2: Convert to fraction form
    1,999,593.72/2,759,431.77 = 1,081,819.98/x
  3. Step 3: Cross multiply
    1,999,593.72x = 2,759,431.77 × 1,081,819.98
  4. Step 4: Simplify right side
    1,999,593.72x = 2,985,208,422,232.76
  5. Step 5: Solve for x
    x = 2,985,208,422,232.76/1,999,593.72
  6. Step 6: Final answer
    x = 1,492,907.48

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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.