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Finding the Fourth Proportional to 1,947,791.75, 2,687,902.46 and 1,088,359.07

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Solution

The fourth proportional to 1,947,791.75, 2,687,902.46 and 1,088,359.07 is: 1,501,907.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947,791.75 : 2,687,902.46 = 1,088,359.07 : x
  2. Step 2: Convert to fraction form
    1,947,791.75/2,687,902.46 = 1,088,359.07/x
  3. Step 3: Cross multiply
    1,947,791.75x = 2,687,902.46 × 1,088,359.07
  4. Step 4: Simplify right side
    1,947,791.75x = 2,925,403,016,174.52
  5. Step 5: Solve for x
    x = 2,925,403,016,174.52/1,947,791.75
  6. Step 6: Final answer
    x = 1,501,907.49

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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.