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Finding the Fourth Proportional to 4,940.10, 7,410.15 and 4,867.20

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Solution

The fourth proportional to 4,940.10, 7,410.15 and 4,867.20 is: 7,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,940.10 : 7,410.15 = 4,867.20 : x
  2. Step 2: Convert to fraction form
    4,940.10/7,410.15 = 4,867.20/x
  3. Step 3: Cross multiply
    4,940.10x = 7,410.15 × 4,867.20
  4. Step 4: Simplify right side
    4,940.10x = 36,066,682.08
  5. Step 5: Solve for x
    x = 36,066,682.08/4,940.10
  6. Step 6: Final answer
    x = 7,300.80

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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.