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Finding the Fourth Proportional to 298,616.40, 411,945.48 and 191,100.24

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Solution

The fourth proportional to 298,616.40, 411,945.48 and 191,100.24 is: 263,625.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,616.40 : 411,945.48 = 191,100.24 : x
  2. Step 2: Convert to fraction form
    298,616.40/411,945.48 = 191,100.24/x
  3. Step 3: Cross multiply
    298,616.40x = 411,945.48 × 191,100.24
  4. Step 4: Simplify right side
    298,616.40x = 78,722,880,094.92
  5. Step 5: Solve for x
    x = 78,722,880,094.92/298,616.40
  6. Step 6: Final answer
    x = 263,625.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.