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Finding the Fourth Proportional to 66,707.31, 99,972.72 and 35,052.69

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Solution

The fourth proportional to 66,707.31, 99,972.72 and 35,052.69 is: 52,532.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,707.31 : 99,972.72 = 35,052.69 : x
  2. Step 2: Convert to fraction form
    66,707.31/99,972.72 = 35,052.69/x
  3. Step 3: Cross multiply
    66,707.31x = 99,972.72 × 35,052.69
  4. Step 4: Simplify right side
    66,707.31x = 3,504,312,762.62
  5. Step 5: Solve for x
    x = 3,504,312,762.62/66,707.31
  6. Step 6: Final answer
    x = 52,532.66

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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.