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Finding the Fourth Proportional to 548,698.90, 823,127.21 and 169,649.20

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Solution

The fourth proportional to 548,698.90, 823,127.21 and 169,649.20 is: 254,498.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,698.90 : 823,127.21 = 169,649.20 : x
  2. Step 2: Convert to fraction form
    548,698.90/823,127.21 = 169,649.20/x
  3. Step 3: Cross multiply
    548,698.90x = 823,127.21 × 169,649.20
  4. Step 4: Simplify right side
    548,698.90x = 139,642,867,710.85
  5. Step 5: Solve for x
    x = 139,642,867,710.85/548,698.90
  6. Step 6: Final answer
    x = 254,498.18

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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.