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Finding the Fourth Proportional to 220,586.62, 330,718.60 and 70,741.60

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Solution

The fourth proportional to 220,586.62, 330,718.60 and 70,741.60 is: 106,060.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,586.62 : 330,718.60 = 70,741.60 : x
  2. Step 2: Convert to fraction form
    220,586.62/330,718.60 = 70,741.60/x
  3. Step 3: Cross multiply
    220,586.62x = 330,718.60 × 70,741.60
  4. Step 4: Simplify right side
    220,586.62x = 23,395,562,913.76
  5. Step 5: Solve for x
    x = 23,395,562,913.76/220,586.62
  6. Step 6: Final answer
    x = 106,060.66

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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.