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Finding the Fourth Proportional to 70,052.22, 105,149.80 and 51,276.48

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Solution

The fourth proportional to 70,052.22, 105,149.80 and 51,276.48 is: 76,967.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,052.22 : 105,149.80 = 51,276.48 : x
  2. Step 2: Convert to fraction form
    70,052.22/105,149.80 = 51,276.48/x
  3. Step 3: Cross multiply
    70,052.22x = 105,149.80 × 51,276.48
  4. Step 4: Simplify right side
    70,052.22x = 5,391,711,680.80
  5. Step 5: Solve for x
    x = 5,391,711,680.80/70,052.22
  6. Step 6: Final answer
    x = 76,967.04

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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.