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Finding the Fourth Proportional to 8,927.15, 13,392.64 and 2,686.67

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Solution

The fourth proportional to 8,927.15, 13,392.64 and 2,686.67 is: 4,030.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,927.15 : 13,392.64 = 2,686.67 : x
  2. Step 2: Convert to fraction form
    8,927.15/13,392.64 = 2,686.67/x
  3. Step 3: Cross multiply
    8,927.15x = 13,392.64 × 2,686.67
  4. Step 4: Simplify right side
    8,927.15x = 35,981,590.73
  5. Step 5: Solve for x
    x = 35,981,590.73/8,927.15
  6. Step 6: Final answer
    x = 4,030.58

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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.