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Finding the Fourth Proportional to 13,207,536.90, 18,515,745.90 and 13,207,536.90

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Solution

The fourth proportional to 13,207,536.90, 18,515,745.90 and 13,207,536.90 is: 18,515,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207,536.90 : 18,515,745.90 = 13,207,536.90 : x
  2. Step 2: Convert to fraction form
    13,207,536.90/18,515,745.90 = 13,207,536.90/x
  3. Step 3: Cross multiply
    13,207,536.90x = 18,515,745.90 × 13,207,536.90
  4. Step 4: Simplify right side
    13,207,536.90x = 244,547,397,205,273.69
  5. Step 5: Solve for x
    x = 244,547,397,205,273.69/13,207,536.90
  6. Step 6: Final answer
    x = 18,515,745.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.