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Finding the Fourth Proportional to 18,669,000.60, 28,003,500.90 and 16,684,954.20

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Solution

The fourth proportional to 18,669,000.60, 28,003,500.90 and 16,684,954.20 is: 25,027,431.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669,000.60 : 28,003,500.90 = 16,684,954.20 : x
  2. Step 2: Convert to fraction form
    18,669,000.60/28,003,500.90 = 16,684,954.20/x
  3. Step 3: Cross multiply
    18,669,000.60x = 28,003,500.90 × 16,684,954.20
  4. Step 4: Simplify right side
    18,669,000.60x = 467,237,129,956,158.75
  5. Step 5: Solve for x
    x = 467,237,129,956,158.75/18,669,000.60
  6. Step 6: Final answer
    x = 25,027,431.30

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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.