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Finding the Fourth Proportional to 61,285.90, 91,917.89 and 16,307.50

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Solution

The fourth proportional to 61,285.90, 91,917.89 and 16,307.50 is: 24,458.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,285.90 : 91,917.89 = 16,307.50 : x
  2. Step 2: Convert to fraction form
    61,285.90/91,917.89 = 16,307.50/x
  3. Step 3: Cross multiply
    61,285.90x = 91,917.89 × 16,307.50
  4. Step 4: Simplify right side
    61,285.90x = 1,498,950,991.18
  5. Step 5: Solve for x
    x = 1,498,950,991.18/61,285.90
  6. Step 6: Final answer
    x = 24,458.33

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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.