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Finding the Fourth Proportional to 9,960.80, 14,941.20 and 6,072.80

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Solution

The fourth proportional to 9,960.80, 14,941.20 and 6,072.80 is: 9,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,960.80 : 14,941.20 = 6,072.80 : x
  2. Step 2: Convert to fraction form
    9,960.80/14,941.20 = 6,072.80/x
  3. Step 3: Cross multiply
    9,960.80x = 14,941.20 × 6,072.80
  4. Step 4: Simplify right side
    9,960.80x = 90,734,919.36
  5. Step 5: Solve for x
    x = 90,734,919.36/9,960.80
  6. Step 6: Final answer
    x = 9,109.20

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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.