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Finding the Fourth Proportional to 7,763.64, 10,715.25 and 4,576.69

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Solution

The fourth proportional to 7,763.64, 10,715.25 and 4,576.69 is: 6,316.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,763.64 : 10,715.25 = 4,576.69 : x
  2. Step 2: Convert to fraction form
    7,763.64/10,715.25 = 4,576.69/x
  3. Step 3: Cross multiply
    7,763.64x = 10,715.25 × 4,576.69
  4. Step 4: Simplify right side
    7,763.64x = 49,040,377.52
  5. Step 5: Solve for x
    x = 49,040,377.52/7,763.64
  6. Step 6: Final answer
    x = 6,316.67

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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.