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Finding the Fourth Proportional to 18,754.96, 28,133.52 and 7,068.28

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Solution

The fourth proportional to 18,754.96, 28,133.52 and 7,068.28 is: 10,602.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.96 : 28,133.52 = 7,068.28 : x
  2. Step 2: Convert to fraction form
    18,754.96/28,133.52 = 7,068.28/x
  3. Step 3: Cross multiply
    18,754.96x = 28,133.52 × 7,068.28
  4. Step 4: Simplify right side
    18,754.96x = 198,855,596.75
  5. Step 5: Solve for x
    x = 198,855,596.75/18,754.96
  6. Step 6: Final answer
    x = 10,602.83

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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.