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Finding the Fourth Proportional to 343,939.82, 474,630.29 and 190,970.11

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Solution

The fourth proportional to 343,939.82, 474,630.29 and 190,970.11 is: 263,535.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,939.82 : 474,630.29 = 190,970.11 : x
  2. Step 2: Convert to fraction form
    343,939.82/474,630.29 = 190,970.11/x
  3. Step 3: Cross multiply
    343,939.82x = 474,630.29 × 190,970.11
  4. Step 4: Simplify right side
    343,939.82x = 90,640,198,690.63
  5. Step 5: Solve for x
    x = 90,640,198,690.63/343,939.82
  6. Step 6: Final answer
    x = 263,535.05

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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.