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Finding the Fourth Proportional to 18,517.68, 27,776.70 and 4,666.68

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Solution

The fourth proportional to 18,517.68, 27,776.70 and 4,666.68 is: 7,000.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.68 : 27,776.70 = 4,666.68 : x
  2. Step 2: Convert to fraction form
    18,517.68/27,776.70 = 4,666.68/x
  3. Step 3: Cross multiply
    18,517.68x = 27,776.70 × 4,666.68
  4. Step 4: Simplify right side
    18,517.68x = 129,624,970.36
  5. Step 5: Solve for x
    x = 129,624,970.36/18,517.68
  6. Step 6: Final answer
    x = 7,000.07

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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.