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Finding the Fourth Proportional to 76,425.66, 114,560.73 and 70,768.62

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Solution

The fourth proportional to 76,425.66, 114,560.73 and 70,768.62 is: 106,080.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,425.66 : 114,560.73 = 70,768.62 : x
  2. Step 2: Convert to fraction form
    76,425.66/114,560.73 = 70,768.62/x
  3. Step 3: Cross multiply
    76,425.66x = 114,560.73 × 70,768.62
  4. Step 4: Simplify right side
    76,425.66x = 8,107,304,768.29
  5. Step 5: Solve for x
    x = 8,107,304,768.29/76,425.66
  6. Step 6: Final answer
    x = 106,080.93

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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.