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Finding the Fourth Proportional to 14,020.56, 21,030.84 and 4,786.56

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Solution

The fourth proportional to 14,020.56, 21,030.84 and 4,786.56 is: 7,179.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,020.56 : 21,030.84 = 4,786.56 : x
  2. Step 2: Convert to fraction form
    14,020.56/21,030.84 = 4,786.56/x
  3. Step 3: Cross multiply
    14,020.56x = 21,030.84 × 4,786.56
  4. Step 4: Simplify right side
    14,020.56x = 100,665,377.51
  5. Step 5: Solve for x
    x = 100,665,377.51/14,020.56
  6. Step 6: Final answer
    x = 7,179.84

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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.