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Finding the Fourth Proportional to 19,076.56, 28,624.56 and 8,686.96

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Solution

The fourth proportional to 19,076.56, 28,624.56 and 8,686.96 is: 13,034.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,076.56 : 28,624.56 = 8,686.96 : x
  2. Step 2: Convert to fraction form
    19,076.56/28,624.56 = 8,686.96/x
  3. Step 3: Cross multiply
    19,076.56x = 28,624.56 × 8,686.96
  4. Step 4: Simplify right side
    19,076.56x = 248,660,407.74
  5. Step 5: Solve for x
    x = 248,660,407.74/19,076.56
  6. Step 6: Final answer
    x = 13,034.87

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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.