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Finding the Fourth Proportional to 220,585.61, 330,717.10 and 70,740.61

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Solution

The fourth proportional to 220,585.61, 330,717.10 and 70,740.61 is: 106,059.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,585.61 : 330,717.10 = 70,740.61 : x
  2. Step 2: Convert to fraction form
    220,585.61/330,717.10 = 70,740.61/x
  3. Step 3: Cross multiply
    220,585.61x = 330,717.10 × 70,740.61
  4. Step 4: Simplify right side
    220,585.61x = 23,395,129,391.43
  5. Step 5: Solve for x
    x = 23,395,129,391.43/220,585.61
  6. Step 6: Final answer
    x = 106,059.18

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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.