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Finding the Fourth Proportional to 18,410.60, 27,607.80 and 7,313.60

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Solution

The fourth proportional to 18,410.60, 27,607.80 and 7,313.60 is: 10,967.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,410.60 : 27,607.80 = 7,313.60 : x
  2. Step 2: Convert to fraction form
    18,410.60/27,607.80 = 7,313.60/x
  3. Step 3: Cross multiply
    18,410.60x = 27,607.80 × 7,313.60
  4. Step 4: Simplify right side
    18,410.60x = 201,912,406.08
  5. Step 5: Solve for x
    x = 201,912,406.08/18,410.60
  6. Step 6: Final answer
    x = 10,967.18

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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.