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Finding the Fourth Proportional to 66,806.57, 100,080.16 and 59,708.54

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Solution

The fourth proportional to 66,806.57, 100,080.16 and 59,708.54 is: 89,446.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,806.57 : 100,080.16 = 59,708.54 : x
  2. Step 2: Convert to fraction form
    66,806.57/100,080.16 = 59,708.54/x
  3. Step 3: Cross multiply
    66,806.57x = 100,080.16 × 59,708.54
  4. Step 4: Simplify right side
    66,806.57x = 5,975,640,337.50
  5. Step 5: Solve for x
    x = 5,975,640,337.50/66,806.57
  6. Step 6: Final answer
    x = 89,446.89

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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.