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Finding the Fourth Proportional to 54,679,898.80, 82,019,848.20 and 29,107,745.20

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Solution

The fourth proportional to 54,679,898.80, 82,019,848.20 and 29,107,745.20 is: 43,661,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,679,898.80 : 82,019,848.20 = 29,107,745.20 : x
  2. Step 2: Convert to fraction form
    54,679,898.80/82,019,848.20 = 29,107,745.20/x
  3. Step 3: Cross multiply
    54,679,898.80x = 82,019,848.20 × 29,107,745.20
  4. Step 4: Simplify right side
    54,679,898.80x = 2,387,412,842,748,278.50
  5. Step 5: Solve for x
    x = 2,387,412,842,748,278.50/54,679,898.80
  6. Step 6: Final answer
    x = 43,661,617.80

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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.