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Finding the Fourth Proportional to 62,021.90, 86,947.30 and 62,021.90

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Solution

The fourth proportional to 62,021.90, 86,947.30 and 62,021.90 is: 86,947.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,021.90 : 86,947.30 = 62,021.90 : x
  2. Step 2: Convert to fraction form
    62,021.90/86,947.30 = 62,021.90/x
  3. Step 3: Cross multiply
    62,021.90x = 86,947.30 × 62,021.90
  4. Step 4: Simplify right side
    62,021.90x = 5,392,636,745.87
  5. Step 5: Solve for x
    x = 5,392,636,745.87/62,021.90
  6. Step 6: Final answer
    x = 86,947.30

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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.