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Finding the Fourth Proportional to 62,977.36, 86,907.72 and 34,685.68

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Solution

The fourth proportional to 62,977.36, 86,907.72 and 34,685.68 is: 47,865.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,977.36 : 86,907.72 = 34,685.68 : x
  2. Step 2: Convert to fraction form
    62,977.36/86,907.72 = 34,685.68/x
  3. Step 3: Cross multiply
    62,977.36x = 86,907.72 × 34,685.68
  4. Step 4: Simplify right side
    62,977.36x = 3,014,453,365.45
  5. Step 5: Solve for x
    x = 3,014,453,365.45/62,977.36
  6. Step 6: Final answer
    x = 47,865.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.