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Finding the Fourth Proportional to 14,980.75, 20,673.44 and 8,356.75

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Solution

The fourth proportional to 14,980.75, 20,673.44 and 8,356.75 is: 11,532.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,980.75 : 20,673.44 = 8,356.75 : x
  2. Step 2: Convert to fraction form
    14,980.75/20,673.44 = 8,356.75/x
  3. Step 3: Cross multiply
    14,980.75x = 20,673.44 × 8,356.75
  4. Step 4: Simplify right side
    14,980.75x = 172,762,769.72
  5. Step 5: Solve for x
    x = 172,762,769.72/14,980.75
  6. Step 6: Final answer
    x = 11,532.32

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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.