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Finding the Fourth Proportional to 8,632.74, 12,945.54 and 2,707.65

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Solution

The fourth proportional to 8,632.74, 12,945.54 and 2,707.65 is: 4,060.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,632.74 : 12,945.54 = 2,707.65 : x
  2. Step 2: Convert to fraction form
    8,632.74/12,945.54 = 2,707.65/x
  3. Step 3: Cross multiply
    8,632.74x = 12,945.54 × 2,707.65
  4. Step 4: Simplify right side
    8,632.74x = 35,051,991.38
  5. Step 5: Solve for x
    x = 35,051,991.38/8,632.74
  6. Step 6: Final answer
    x = 4,060.36

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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.