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Finding the Fourth Proportional to 525,091.80, 787,205.70 and 225,802.20

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Solution

The fourth proportional to 525,091.80, 787,205.70 and 225,802.20 is: 338,517.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,091.80 : 787,205.70 = 225,802.20 : x
  2. Step 2: Convert to fraction form
    525,091.80/787,205.70 = 225,802.20/x
  3. Step 3: Cross multiply
    525,091.80x = 787,205.70 × 225,802.20
  4. Step 4: Simplify right side
    525,091.80x = 177,752,778,912.54
  5. Step 5: Solve for x
    x = 177,752,778,912.54/525,091.80
  6. Step 6: Final answer
    x = 338,517.53

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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.