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Finding the Fourth Proportional to 76,693.20, 115,058.88 and 60,957.60

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Solution

The fourth proportional to 76,693.20, 115,058.88 and 60,957.60 is: 91,451.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,693.20 : 115,058.88 = 60,957.60 : x
  2. Step 2: Convert to fraction form
    76,693.20/115,058.88 = 60,957.60/x
  3. Step 3: Cross multiply
    76,693.20x = 115,058.88 × 60,957.60
  4. Step 4: Simplify right side
    76,693.20x = 7,013,713,183.49
  5. Step 5: Solve for x
    x = 7,013,713,183.49/76,693.20
  6. Step 6: Final answer
    x = 91,451.57

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1.5x scale

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.