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Finding the Fourth Proportional to 272,844,704.80, 409,270,556.40 and 91,091,882.80

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Solution

The fourth proportional to 272,844,704.80, 409,270,556.40 and 91,091,882.80 is: 136,638,992.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,844,704.80 : 409,270,556.40 = 91,091,882.80 : x
  2. Step 2: Convert to fraction form
    272,844,704.80/409,270,556.40 = 91,091,882.80/x
  3. Step 3: Cross multiply
    272,844,704.80x = 409,270,556.40 × 91,091,882.80
  4. Step 4: Simplify right side
    272,844,704.80x = 37,281,225,557,079,584
  5. Step 5: Solve for x
    x = 37,281,225,557,079,584/272,844,704.80
  6. Step 6: Final answer
    x = 136,638,992.44

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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.