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Finding the Fourth Proportional to 18,685,266.30, 28,027,899.45 and 18,685,266.30

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Solution

The fourth proportional to 18,685,266.30, 28,027,899.45 and 18,685,266.30 is: 28,027,899.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685,266.30 : 28,027,899.45 = 18,685,266.30 : x
  2. Step 2: Convert to fraction form
    18,685,266.30/28,027,899.45 = 18,685,266.30/x
  3. Step 3: Cross multiply
    18,685,266.30x = 28,027,899.45 × 18,685,266.30
  4. Step 4: Simplify right side
    18,685,266.30x = 523,708,765,052,873.56
  5. Step 5: Solve for x
    x = 523,708,765,052,873.56/18,685,266.30
  6. Step 6: Final answer
    x = 28,027,899.45

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Double scale
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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.