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Finding the Fourth Proportional to 548,015.80, 822,023.70 and 193,430.20

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Solution

The fourth proportional to 548,015.80, 822,023.70 and 193,430.20 is: 290,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,015.80 : 822,023.70 = 193,430.20 : x
  2. Step 2: Convert to fraction form
    548,015.80/822,023.70 = 193,430.20/x
  3. Step 3: Cross multiply
    548,015.80x = 822,023.70 × 193,430.20
  4. Step 4: Simplify right side
    548,015.80x = 159,004,208,695.74
  5. Step 5: Solve for x
    x = 159,004,208,695.74/548,015.80
  6. Step 6: Final answer
    x = 290,145.30

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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.