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Finding the Fourth Proportional to 18,672,551.60, 28,008,827.40 and 16,998,512.45

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Solution

The fourth proportional to 18,672,551.60, 28,008,827.40 and 16,998,512.45 is: 25,497,768.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672,551.60 : 28,008,827.40 = 16,998,512.45 : x
  2. Step 2: Convert to fraction form
    18,672,551.60/28,008,827.40 = 16,998,512.45/x
  3. Step 3: Cross multiply
    18,672,551.60x = 28,008,827.40 × 16,998,512.45
  4. Step 4: Simplify right side
    18,672,551.60x = 476,108,401,268,801.06
  5. Step 5: Solve for x
    x = 476,108,401,268,801.06/18,672,551.60
  6. Step 6: Final answer
    x = 25,497,768.68

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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.