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Finding the Fourth Proportional to 5,177,893.44, 7,766,833.44 and 1,391,376.40

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Solution

The fourth proportional to 5,177,893.44, 7,766,833.44 and 1,391,376.40 is: 2,087,062.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177,893.44 : 7,766,833.44 = 1,391,376.40 : x
  2. Step 2: Convert to fraction form
    5,177,893.44/7,766,833.44 = 1,391,376.40/x
  3. Step 3: Cross multiply
    5,177,893.44x = 7,766,833.44 × 1,391,376.40
  4. Step 4: Simplify right side
    5,177,893.44x = 10,806,588,751,146.82
  5. Step 5: Solve for x
    x = 10,806,588,751,146.82/5,177,893.44
  6. Step 6: Final answer
    x = 2,087,062.79

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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.