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Finding the Fourth Proportional to 3,858,455.36, 5,787,685.29 and 980,038.07

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Solution

The fourth proportional to 3,858,455.36, 5,787,685.29 and 980,038.07 is: 1,470,057.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858,455.36 : 5,787,685.29 = 980,038.07 : x
  2. Step 2: Convert to fraction form
    3,858,455.36/5,787,685.29 = 980,038.07/x
  3. Step 3: Cross multiply
    3,858,455.36x = 5,787,685.29 × 980,038.07
  4. Step 4: Simplify right side
    3,858,455.36x = 5,672,151,892,440.56
  5. Step 5: Solve for x
    x = 5,672,151,892,440.56/3,858,455.36
  6. Step 6: Final answer
    x = 1,470,057.67

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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.