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Finding the Fourth Proportional to 273,943,011.02, 411,055,791.36 and 128,391,359.45

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Solution

The fourth proportional to 273,943,011.02, 411,055,791.36 and 128,391,359.45 is: 192,653,251.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,943,011.02 : 411,055,791.36 = 128,391,359.45 : x
  2. Step 2: Convert to fraction form
    273,943,011.02/411,055,791.36 = 128,391,359.45/x
  3. Step 3: Cross multiply
    273,943,011.02x = 411,055,791.36 × 128,391,359.45
  4. Step 4: Simplify right side
    273,943,011.02x = 52,776,011,862,505,968
  5. Step 5: Solve for x
    x = 52,776,011,862,505,968/273,943,011.02
  6. Step 6: Final answer
    x = 192,653,251.73

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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.