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Finding the Fourth Proportional to 220,660.50, 304,511.50 and 120,059.22

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Solution

The fourth proportional to 220,660.50, 304,511.50 and 120,059.22 is: 165,681.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,660.50 : 304,511.50 = 120,059.22 : x
  2. Step 2: Convert to fraction form
    220,660.50/304,511.50 = 120,059.22/x
  3. Step 3: Cross multiply
    220,660.50x = 304,511.50 × 120,059.22
  4. Step 4: Simplify right side
    220,660.50x = 36,559,413,171.03
  5. Step 5: Solve for x
    x = 36,559,413,171.03/220,660.50
  6. Step 6: Final answer
    x = 165,681.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.