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Finding the Fourth Proportional to 3,948,895.78, 5,923,343.67 and 957,079.78

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Solution

The fourth proportional to 3,948,895.78, 5,923,343.67 and 957,079.78 is: 1,435,619.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948,895.78 : 5,923,343.67 = 957,079.78 : x
  2. Step 2: Convert to fraction form
    3,948,895.78/5,923,343.67 = 957,079.78/x
  3. Step 3: Cross multiply
    3,948,895.78x = 5,923,343.67 × 957,079.78
  4. Step 4: Simplify right side
    3,948,895.78x = 5,669,112,456,547.99
  5. Step 5: Solve for x
    x = 5,669,112,456,547.99/3,948,895.78
  6. Step 6: Final answer
    x = 1,435,619.67

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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.