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Finding the Fourth Proportional to 1,918,239.53, 2,647,170.77 and 1,058,800.01

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Solution

The fourth proportional to 1,918,239.53, 2,647,170.77 and 1,058,800.01 is: 1,461,144.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,239.53 : 2,647,170.77 = 1,058,800.01 : x
  2. Step 2: Convert to fraction form
    1,918,239.53/2,647,170.77 = 1,058,800.01/x
  3. Step 3: Cross multiply
    1,918,239.53x = 2,647,170.77 × 1,058,800.01
  4. Step 4: Simplify right side
    1,918,239.53x = 2,802,824,419,217.85
  5. Step 5: Solve for x
    x = 2,802,824,419,217.85/1,918,239.53
  6. Step 6: Final answer
    x = 1,461,144.13

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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.