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Finding the Fourth Proportional to 60,789.65, 91,189.09 and 16,415.77

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Solution

The fourth proportional to 60,789.65, 91,189.09 and 16,415.77 is: 24,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,789.65 : 91,189.09 = 16,415.77 : x
  2. Step 2: Convert to fraction form
    60,789.65/91,189.09 = 16,415.77/x
  3. Step 3: Cross multiply
    60,789.65x = 91,189.09 × 16,415.77
  4. Step 4: Simplify right side
    60,789.65x = 1,496,939,127.95
  5. Step 5: Solve for x
    x = 1,496,939,127.95/60,789.65
  6. Step 6: Final answer
    x = 24,624.90

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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.