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Finding the Fourth Proportional to 15,861.65, 23,795.22 and 5,332.70

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Solution

The fourth proportional to 15,861.65, 23,795.22 and 5,332.70 is: 7,999.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.65 : 23,795.22 = 5,332.70 : x
  2. Step 2: Convert to fraction form
    15,861.65/23,795.22 = 5,332.70/x
  3. Step 3: Cross multiply
    15,861.65x = 23,795.22 × 5,332.70
  4. Step 4: Simplify right side
    15,861.65x = 126,892,650.72
  5. Step 5: Solve for x
    x = 126,892,650.72/15,861.65
  6. Step 6: Final answer
    x = 7,999.97

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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.