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Finding the Fourth Proportional to 220,125.80, 329,313.90 and 190,868.60

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Solution

The fourth proportional to 220,125.80, 329,313.90 and 190,868.60 is: 285,544.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,125.80 : 329,313.90 = 190,868.60 : x
  2. Step 2: Convert to fraction form
    220,125.80/329,313.90 = 190,868.60/x
  3. Step 3: Cross multiply
    220,125.80x = 329,313.90 × 190,868.60
  4. Step 4: Simplify right side
    220,125.80x = 62,855,683,053.54
  5. Step 5: Solve for x
    x = 62,855,683,053.54/220,125.80
  6. Step 6: Final answer
    x = 285,544.37

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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.