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Finding the Fourth Proportional to 18,700.76, 28,056.02 and 7,014.20

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Solution

The fourth proportional to 18,700.76, 28,056.02 and 7,014.20 is: 10,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,700.76 : 28,056.02 = 7,014.20 : x
  2. Step 2: Convert to fraction form
    18,700.76/28,056.02 = 7,014.20/x
  3. Step 3: Cross multiply
    18,700.76x = 28,056.02 × 7,014.20
  4. Step 4: Simplify right side
    18,700.76x = 196,790,535.48
  5. Step 5: Solve for x
    x = 196,790,535.48/18,700.76
  6. Step 6: Final answer
    x = 10,523.13

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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.