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Finding the Fourth Proportional to 220,585.49, 330,716.91 and 70,740.48

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Solution

The fourth proportional to 220,585.49, 330,716.91 and 70,740.48 is: 106,058.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,585.49 : 330,716.91 = 70,740.48 : x
  2. Step 2: Convert to fraction form
    220,585.49/330,716.91 = 70,740.48/x
  3. Step 3: Cross multiply
    220,585.49x = 330,716.91 × 70,740.48
  4. Step 4: Simplify right side
    220,585.49x = 23,395,072,957.52
  5. Step 5: Solve for x
    x = 23,395,072,957.52/220,585.49
  6. Step 6: Final answer
    x = 106,058.98

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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.