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Finding the Fourth Proportional to 6,978,932.49, 10,468,402.54 and 2,186,996.79

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Solution

The fourth proportional to 6,978,932.49, 10,468,402.54 and 2,186,996.79 is: 3,280,496.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,978,932.49 : 10,468,402.54 = 2,186,996.79 : x
  2. Step 2: Convert to fraction form
    6,978,932.49/10,468,402.54 = 2,186,996.79/x
  3. Step 3: Cross multiply
    6,978,932.49x = 10,468,402.54 × 2,186,996.79
  4. Step 4: Simplify right side
    6,978,932.49x = 22,894,362,785,196.87
  5. Step 5: Solve for x
    x = 22,894,362,785,196.87/6,978,932.49
  6. Step 6: Final answer
    x = 3,280,496.38

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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.