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Finding the Fourth Proportional to 1,957,643.73, 2,936,115.63 and 1,245,556.53

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Solution

The fourth proportional to 1,957,643.73, 2,936,115.63 and 1,245,556.53 is: 1,868,112.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957,643.73 : 2,936,115.63 = 1,245,556.53 : x
  2. Step 2: Convert to fraction form
    1,957,643.73/2,936,115.63 = 1,245,556.53/x
  3. Step 3: Cross multiply
    1,957,643.73x = 2,936,115.63 × 1,245,556.53
  4. Step 4: Simplify right side
    1,957,643.73x = 3,657,097,995,781.56
  5. Step 5: Solve for x
    x = 3,657,097,995,781.56/1,957,643.73
  6. Step 6: Final answer
    x = 1,868,112.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.