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Finding the Fourth Proportional to 56,942,978.78, 85,429,033.58 and 16,553,462.78

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Solution

The fourth proportional to 56,942,978.78, 85,429,033.58 and 16,553,462.78 is: 24,834,428.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,942,978.78 : 85,429,033.58 = 16,553,462.78 : x
  2. Step 2: Convert to fraction form
    56,942,978.78/85,429,033.58 = 16,553,462.78/x
  3. Step 3: Cross multiply
    56,942,978.78x = 85,429,033.58 × 16,553,462.78
  4. Step 4: Simplify right side
    56,942,978.78x = 1,414,146,327,187,987.75
  5. Step 5: Solve for x
    x = 1,414,146,327,187,987.75/56,942,978.78
  6. Step 6: Final answer
    x = 24,834,428.36

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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.