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Finding the Fourth Proportional to 14,891.70, 22,301.10 and 7,091.40

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Solution

The fourth proportional to 14,891.70, 22,301.10 and 7,091.40 is: 10,619.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,891.70 : 22,301.10 = 7,091.40 : x
  2. Step 2: Convert to fraction form
    14,891.70/22,301.10 = 7,091.40/x
  3. Step 3: Cross multiply
    14,891.70x = 22,301.10 × 7,091.40
  4. Step 4: Simplify right side
    14,891.70x = 158,146,020.54
  5. Step 5: Solve for x
    x = 158,146,020.54/14,891.70
  6. Step 6: Final answer
    x = 10,619.74

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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.