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Finding the Fourth Proportional to 17,751,921.40, 26,638,379.70 and 11,704,137.40

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Solution

The fourth proportional to 17,751,921.40, 26,638,379.70 and 11,704,137.40 is: 17,563,127.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,751,921.40 : 26,638,379.70 = 11,704,137.40 : x
  2. Step 2: Convert to fraction form
    17,751,921.40/26,638,379.70 = 11,704,137.40/x
  3. Step 3: Cross multiply
    17,751,921.40x = 26,638,379.70 × 11,704,137.40
  4. Step 4: Simplify right side
    17,751,921.40x = 311,779,256,122,170.75
  5. Step 5: Solve for x
    x = 311,779,256,122,170.75/17,751,921.40
  6. Step 6: Final answer
    x = 17,563,127.34

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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.