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Finding the Fourth Proportional to 18,151,602.30, 25,431,138.90 and 18,151,602.30

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Solution

The fourth proportional to 18,151,602.30, 25,431,138.90 and 18,151,602.30 is: 25,431,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,151,602.30 : 25,431,138.90 = 18,151,602.30 : x
  2. Step 2: Convert to fraction form
    18,151,602.30/25,431,138.90 = 18,151,602.30/x
  3. Step 3: Cross multiply
    18,151,602.30x = 25,431,138.90 × 18,151,602.30
  4. Step 4: Simplify right side
    18,151,602.30x = 461,615,919,348,859.44
  5. Step 5: Solve for x
    x = 461,615,919,348,859.44/18,151,602.30
  6. Step 6: Final answer
    x = 25,431,138.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.