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Finding the Fourth Proportional to 201,556.88, 278,157.84 and 116,657.60

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Solution

The fourth proportional to 201,556.88, 278,157.84 and 116,657.60 is: 160,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,556.88 : 278,157.84 = 116,657.60 : x
  2. Step 2: Convert to fraction form
    201,556.88/278,157.84 = 116,657.60/x
  3. Step 3: Cross multiply
    201,556.88x = 278,157.84 × 116,657.60
  4. Step 4: Simplify right side
    201,556.88x = 32,449,226,035.58
  5. Step 5: Solve for x
    x = 32,449,226,035.58/201,556.88
  6. Step 6: Final answer
    x = 160,992.90

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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.