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Finding the Fourth Proportional to 17,751,927.90, 26,638,389.45 and 11,704,143.90

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Solution

The fourth proportional to 17,751,927.90, 26,638,389.45 and 11,704,143.90 is: 17,563,137.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,751,927.90 : 26,638,389.45 = 11,704,143.90 : x
  2. Step 2: Convert to fraction form
    17,751,927.90/26,638,389.45 = 11,704,143.90/x
  3. Step 3: Cross multiply
    17,751,927.90x = 26,638,389.45 × 11,704,143.90
  4. Step 4: Simplify right side
    17,751,927.90x = 311,779,543,387,041.88
  5. Step 5: Solve for x
    x = 311,779,543,387,041.88/17,751,927.90
  6. Step 6: Final answer
    x = 17,563,137.09

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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.