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Finding the Fourth Proportional to 15,800.55, 23,701.23 and 7,478.61

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Solution

The fourth proportional to 15,800.55, 23,701.23 and 7,478.61 is: 11,218.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,800.55 : 23,701.23 = 7,478.61 : x
  2. Step 2: Convert to fraction form
    15,800.55/23,701.23 = 7,478.61/x
  3. Step 3: Cross multiply
    15,800.55x = 23,701.23 × 7,478.61
  4. Step 4: Simplify right side
    15,800.55x = 177,252,255.69
  5. Step 5: Solve for x
    x = 177,252,255.69/15,800.55
  6. Step 6: Final answer
    x = 11,218.11

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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.