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Finding the Fourth Proportional to 1,581,786.69, 2,183,082.87 and 969,831.28

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Solution

The fourth proportional to 1,581,786.69, 2,183,082.87 and 969,831.28 is: 1,338,500.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,786.69 : 2,183,082.87 = 969,831.28 : x
  2. Step 2: Convert to fraction form
    1,581,786.69/2,183,082.87 = 969,831.28/x
  3. Step 3: Cross multiply
    1,581,786.69x = 2,183,082.87 × 969,831.28
  4. Step 4: Simplify right side
    1,581,786.69x = 2,117,222,054,158.17
  5. Step 5: Solve for x
    x = 2,117,222,054,158.17/1,581,786.69
  6. Step 6: Final answer
    x = 1,338,500.36

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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.