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Finding the Fourth Proportional to 203,871.91, 281,346.71 and 111,995.07

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Solution

The fourth proportional to 203,871.91, 281,346.71 and 111,995.07 is: 154,555.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,871.91 : 281,346.71 = 111,995.07 : x
  2. Step 2: Convert to fraction form
    203,871.91/281,346.71 = 111,995.07/x
  3. Step 3: Cross multiply
    203,871.91x = 281,346.71 × 111,995.07
  4. Step 4: Simplify right side
    203,871.91x = 31,509,443,073.99
  5. Step 5: Solve for x
    x = 31,509,443,073.99/203,871.91
  6. Step 6: Final answer
    x = 154,555.10

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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.