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Finding the Fourth Proportional to 18,065.76, 27,106.39 and 6,980.23

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Solution

The fourth proportional to 18,065.76, 27,106.39 and 6,980.23 is: 10,473.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,065.76 : 27,106.39 = 6,980.23 : x
  2. Step 2: Convert to fraction form
    18,065.76/27,106.39 = 6,980.23/x
  3. Step 3: Cross multiply
    18,065.76x = 27,106.39 × 6,980.23
  4. Step 4: Simplify right side
    18,065.76x = 189,208,836.67
  5. Step 5: Solve for x
    x = 189,208,836.67/18,065.76
  6. Step 6: Final answer
    x = 10,473.34

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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.