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Finding the Fourth Proportional to 548,638.20, 822,957.30 and 174,661.20

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Solution

The fourth proportional to 548,638.20, 822,957.30 and 174,661.20 is: 261,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,638.20 : 822,957.30 = 174,661.20 : x
  2. Step 2: Convert to fraction form
    548,638.20/822,957.30 = 174,661.20/x
  3. Step 3: Cross multiply
    548,638.20x = 822,957.30 × 174,661.20
  4. Step 4: Simplify right side
    548,638.20x = 143,738,709,566.76
  5. Step 5: Solve for x
    x = 143,738,709,566.76/548,638.20
  6. Step 6: Final answer
    x = 261,991.80

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Similar ratio
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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.