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Finding the Fourth Proportional to 14,879.64, 20,535.53 and 9,506.99

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Solution

The fourth proportional to 14,879.64, 20,535.53 and 9,506.99 is: 13,120.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,879.64 : 20,535.53 = 9,506.99 : x
  2. Step 2: Convert to fraction form
    14,879.64/20,535.53 = 9,506.99/x
  3. Step 3: Cross multiply
    14,879.64x = 20,535.53 × 9,506.99
  4. Step 4: Simplify right side
    14,879.64x = 195,230,928.14
  5. Step 5: Solve for x
    x = 195,230,928.14/14,879.64
  6. Step 6: Final answer
    x = 13,120.68

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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.