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Finding the Fourth Proportional to 20,794.56, 28,647.84 and 14,495.68

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Solution

The fourth proportional to 20,794.56, 28,647.84 and 14,495.68 is: 19,970.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.56 : 28,647.84 = 14,495.68 : x
  2. Step 2: Convert to fraction form
    20,794.56/28,647.84 = 14,495.68/x
  3. Step 3: Cross multiply
    20,794.56x = 28,647.84 × 14,495.68
  4. Step 4: Simplify right side
    20,794.56x = 415,269,921.33
  5. Step 5: Solve for x
    x = 415,269,921.33/20,794.56
  6. Step 6: Final answer
    x = 19,970.12

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1.5x scale

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.