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Finding the Fourth Proportional to 193,978,211.82, 291,005,708.84 and 71,157,602.20

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Solution

The fourth proportional to 193,978,211.82, 291,005,708.84 and 71,157,602.20 is: 106,750,486.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,978,211.82 : 291,005,708.84 = 71,157,602.20 : x
  2. Step 2: Convert to fraction form
    193,978,211.82/291,005,708.84 = 71,157,602.20/x
  3. Step 3: Cross multiply
    193,978,211.82x = 291,005,708.84 × 71,157,602.20
  4. Step 4: Simplify right side
    193,978,211.82x = 20,707,268,467,565,744
  5. Step 5: Solve for x
    x = 20,707,268,467,565,744/193,978,211.82
  6. Step 6: Final answer
    x = 106,750,486.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.