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Finding the Fourth Proportional to 702,081.21, 968,870.94 and 379,790.31

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Solution

The fourth proportional to 702,081.21, 968,870.94 and 379,790.31 is: 524,110.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,081.21 : 968,870.94 = 379,790.31 : x
  2. Step 2: Convert to fraction form
    702,081.21/968,870.94 = 379,790.31/x
  3. Step 3: Cross multiply
    702,081.21x = 968,870.94 × 379,790.31
  4. Step 4: Simplify right side
    702,081.21x = 367,967,794,652.59
  5. Step 5: Solve for x
    x = 367,967,794,652.59/702,081.21
  6. Step 6: Final answer
    x = 524,110.02

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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.