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Finding the Fourth Proportional to 25,967.70, 38,923.74 and 18,549.65

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Solution

The fourth proportional to 25,967.70, 38,923.74 and 18,549.65 is: 27,804.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,967.70 : 38,923.74 = 18,549.65 : x
  2. Step 2: Convert to fraction form
    25,967.70/38,923.74 = 18,549.65/x
  3. Step 3: Cross multiply
    25,967.70x = 38,923.74 × 18,549.65
  4. Step 4: Simplify right side
    25,967.70x = 722,021,851.00
  5. Step 5: Solve for x
    x = 722,021,851.00/25,967.70
  6. Step 6: Final answer
    x = 27,804.61

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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.