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Finding the Fourth Proportional to 7,293.56, 10,065.14 and 3,981.56

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Solution

The fourth proportional to 7,293.56, 10,065.14 and 3,981.56 is: 5,494.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,293.56 : 10,065.14 = 3,981.56 : x
  2. Step 2: Convert to fraction form
    7,293.56/10,065.14 = 3,981.56/x
  3. Step 3: Cross multiply
    7,293.56x = 10,065.14 × 3,981.56
  4. Step 4: Simplify right side
    7,293.56x = 40,074,958.82
  5. Step 5: Solve for x
    x = 40,074,958.82/7,293.56
  6. Step 6: Final answer
    x = 5,494.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.