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Finding the Fourth Proportional to 6,899,620.84, 9,521,539.72 and 3,802,255.32

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Solution

The fourth proportional to 6,899,620.84, 9,521,539.72 and 3,802,255.32 is: 5,247,147.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899,620.84 : 9,521,539.72 = 3,802,255.32 : x
  2. Step 2: Convert to fraction form
    6,899,620.84/9,521,539.72 = 3,802,255.32/x
  3. Step 3: Cross multiply
    6,899,620.84x = 9,521,539.72 × 3,802,255.32
  4. Step 4: Simplify right side
    6,899,620.84x = 36,203,325,102,549.13
  5. Step 5: Solve for x
    x = 36,203,325,102,549.13/6,899,620.84
  6. Step 6: Final answer
    x = 5,247,147.05

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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.