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Finding the Fourth Proportional to 18,515,599.30, 25,858,066.10 and 18,515,599.30

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Solution

The fourth proportional to 18,515,599.30, 25,858,066.10 and 18,515,599.30 is: 25,858,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515,599.30 : 25,858,066.10 = 18,515,599.30 : x
  2. Step 2: Convert to fraction form
    18,515,599.30/25,858,066.10 = 18,515,599.30/x
  3. Step 3: Cross multiply
    18,515,599.30x = 25,858,066.10 × 18,515,599.30
  4. Step 4: Simplify right side
    18,515,599.30x = 478,777,590,580,513.75
  5. Step 5: Solve for x
    x = 478,777,590,580,513.75/18,515,599.30
  6. Step 6: Final answer
    x = 25,858,066.10

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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.