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Finding the Fourth Proportional to 45,907.43, 68,861.43 and 12,631.01

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Solution

The fourth proportional to 45,907.43, 68,861.43 and 12,631.01 is: 18,946.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,907.43 : 68,861.43 = 12,631.01 : x
  2. Step 2: Convert to fraction form
    45,907.43/68,861.43 = 12,631.01/x
  3. Step 3: Cross multiply
    45,907.43x = 68,861.43 × 12,631.01
  4. Step 4: Simplify right side
    45,907.43x = 869,789,066.64
  5. Step 5: Solve for x
    x = 869,789,066.64/45,907.43
  6. Step 6: Final answer
    x = 18,946.59

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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.