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Finding the Fourth Proportional to 16,988,365.20, 25,481,381.40 and 5,473,664.40

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Solution

The fourth proportional to 16,988,365.20, 25,481,381.40 and 5,473,664.40 is: 8,210,120.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,988,365.20 : 25,481,381.40 = 5,473,664.40 : x
  2. Step 2: Convert to fraction form
    16,988,365.20/25,481,381.40 = 5,473,664.40/x
  3. Step 3: Cross multiply
    16,988,365.20x = 25,481,381.40 × 5,473,664.40
  4. Step 4: Simplify right side
    16,988,365.20x = 139,476,530,232,002.16
  5. Step 5: Solve for x
    x = 139,476,530,232,002.16/16,988,365.20
  6. Step 6: Final answer
    x = 8,210,120.79

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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.