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Finding the Fourth Proportional to 203,915.89, 281,340.43 and 117,843.51

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Solution

The fourth proportional to 203,915.89, 281,340.43 and 117,843.51 is: 162,587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,915.89 : 281,340.43 = 117,843.51 : x
  2. Step 2: Convert to fraction form
    203,915.89/281,340.43 = 117,843.51/x
  3. Step 3: Cross multiply
    203,915.89x = 281,340.43 × 117,843.51
  4. Step 4: Simplify right side
    203,915.89x = 33,154,143,776.11
  5. Step 5: Solve for x
    x = 33,154,143,776.11/203,915.89
  6. Step 6: Final answer
    x = 162,587.35

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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.