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Finding the Fourth Proportional to 203,959.86, 281,442.93 and 117,905.21

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Solution

The fourth proportional to 203,959.86, 281,442.93 and 117,905.21 is: 162,696.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,959.86 : 281,442.93 = 117,905.21 : x
  2. Step 2: Convert to fraction form
    203,959.86/281,442.93 = 117,905.21/x
  3. Step 3: Cross multiply
    203,959.86x = 281,442.93 × 117,905.21
  4. Step 4: Simplify right side
    203,959.86x = 33,183,586,357.45
  5. Step 5: Solve for x
    x = 33,183,586,357.45/203,959.86
  6. Step 6: Final answer
    x = 162,696.65

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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.