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Finding the Fourth Proportional to 12,348.80, 18,523.20 and 4,563.20

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Solution

The fourth proportional to 12,348.80, 18,523.20 and 4,563.20 is: 6,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,348.80 : 18,523.20 = 4,563.20 : x
  2. Step 2: Convert to fraction form
    12,348.80/18,523.20 = 4,563.20/x
  3. Step 3: Cross multiply
    12,348.80x = 18,523.20 × 4,563.20
  4. Step 4: Simplify right side
    12,348.80x = 84,525,066.24
  5. Step 5: Solve for x
    x = 84,525,066.24/12,348.80
  6. Step 6: Final answer
    x = 6,844.80

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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.