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Finding the Fourth Proportional to 13,246.88, 19,870.36 and 4,012.88

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Solution

The fourth proportional to 13,246.88, 19,870.36 and 4,012.88 is: 6,019.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,246.88 : 19,870.36 = 4,012.88 : x
  2. Step 2: Convert to fraction form
    13,246.88/19,870.36 = 4,012.88/x
  3. Step 3: Cross multiply
    13,246.88x = 19,870.36 × 4,012.88
  4. Step 4: Simplify right side
    13,246.88x = 79,737,260.85
  5. Step 5: Solve for x
    x = 79,737,260.85/13,246.88
  6. Step 6: Final answer
    x = 6,019.33

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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.