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Finding the Fourth Proportional to 66,172.68, 99,262.26 and 26,724.87

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Solution

The fourth proportional to 66,172.68, 99,262.26 and 26,724.87 is: 40,088.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172.68 : 99,262.26 = 26,724.87 : x
  2. Step 2: Convert to fraction form
    66,172.68/99,262.26 = 26,724.87/x
  3. Step 3: Cross multiply
    66,172.68x = 99,262.26 × 26,724.87
  4. Step 4: Simplify right side
    66,172.68x = 2,652,770,994.41
  5. Step 5: Solve for x
    x = 2,652,770,994.41/66,172.68
  6. Step 6: Final answer
    x = 40,088.61

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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.