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Finding the Fourth Proportional to 13,910.97, 20,866.50 and 4,050.50

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Solution

The fourth proportional to 13,910.97, 20,866.50 and 4,050.50 is: 6,075.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.97 : 20,866.50 = 4,050.50 : x
  2. Step 2: Convert to fraction form
    13,910.97/20,866.50 = 4,050.50/x
  3. Step 3: Cross multiply
    13,910.97x = 20,866.50 × 4,050.50
  4. Step 4: Simplify right side
    13,910.97x = 84,519,653.92
  5. Step 5: Solve for x
    x = 84,519,653.92/13,910.97
  6. Step 6: Final answer
    x = 6,075.75

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1.5x scale

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.