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Finding the Fourth Proportional to 18,709.73, 28,056.31 and 7,014.74

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Solution

The fourth proportional to 18,709.73, 28,056.31 and 7,014.74 is: 10,519.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.73 : 28,056.31 = 7,014.74 : x
  2. Step 2: Convert to fraction form
    18,709.73/28,056.31 = 7,014.74/x
  3. Step 3: Cross multiply
    18,709.73x = 28,056.31 × 7,014.74
  4. Step 4: Simplify right side
    18,709.73x = 196,807,720.01
  5. Step 5: Solve for x
    x = 196,807,720.01/18,709.73
  6. Step 6: Final answer
    x = 10,519.00

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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.