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Finding the Fourth Proportional to 6,863,196.70, 9,471,385.67 and 3,765,719.21

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Solution

The fourth proportional to 6,863,196.70, 9,471,385.67 and 3,765,719.21 is: 5,196,788.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,863,196.70 : 9,471,385.67 = 3,765,719.21 : x
  2. Step 2: Convert to fraction form
    6,863,196.70/9,471,385.67 = 3,765,719.21/x
  3. Step 3: Cross multiply
    6,863,196.70x = 9,471,385.67 × 3,765,719.21
  4. Step 4: Simplify right side
    6,863,196.70x = 35,666,578,986,997.35
  5. Step 5: Solve for x
    x = 35,666,578,986,997.35/6,863,196.70
  6. Step 6: Final answer
    x = 5,196,788.11

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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.