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Finding the Fourth Proportional to 70,160.52, 105,072.66 and 51,134.16

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Solution

The fourth proportional to 70,160.52, 105,072.66 and 51,134.16 is: 76,578.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,160.52 : 105,072.66 = 51,134.16 : x
  2. Step 2: Convert to fraction form
    70,160.52/105,072.66 = 51,134.16/x
  3. Step 3: Cross multiply
    70,160.52x = 105,072.66 × 51,134.16
  4. Step 4: Simplify right side
    70,160.52x = 5,372,802,208.07
  5. Step 5: Solve for x
    x = 5,372,802,208.07/70,160.52
  6. Step 6: Final answer
    x = 76,578.71

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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.