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Finding the Fourth Proportional to 26,443.62, 39,661.53 and 7,718.62

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Solution

The fourth proportional to 26,443.62, 39,661.53 and 7,718.62 is: 11,576.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,443.62 : 39,661.53 = 7,718.62 : x
  2. Step 2: Convert to fraction form
    26,443.62/39,661.53 = 7,718.62/x
  3. Step 3: Cross multiply
    26,443.62x = 39,661.53 × 7,718.62
  4. Step 4: Simplify right side
    26,443.62x = 306,132,278.69
  5. Step 5: Solve for x
    x = 306,132,278.69/26,443.62
  6. Step 6: Final answer
    x = 11,576.79

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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.