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Finding the Fourth Proportional to 55,450.90, 83,247.86 and 47,603.84

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Solution

The fourth proportional to 55,450.90, 83,247.86 and 47,603.84 is: 71,467.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,450.90 : 83,247.86 = 47,603.84 : x
  2. Step 2: Convert to fraction form
    55,450.90/83,247.86 = 47,603.84/x
  3. Step 3: Cross multiply
    55,450.90x = 83,247.86 × 47,603.84
  4. Step 4: Simplify right side
    55,450.90x = 3,962,917,777.88
  5. Step 5: Solve for x
    x = 3,962,917,777.88/55,450.90
  6. Step 6: Final answer
    x = 71,467.15

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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.