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Finding the Fourth Proportional to 18,194,418.60, 27,216,978.30 and 16,402,828.20

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Solution

The fourth proportional to 18,194,418.60, 27,216,978.30 and 16,402,828.20 is: 24,536,943.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,194,418.60 : 27,216,978.30 = 16,402,828.20 : x
  2. Step 2: Convert to fraction form
    18,194,418.60/27,216,978.30 = 16,402,828.20/x
  3. Step 3: Cross multiply
    18,194,418.60x = 27,216,978.30 × 16,402,828.20
  4. Step 4: Simplify right side
    18,194,418.60x = 446,435,419,178,028.06
  5. Step 5: Solve for x
    x = 446,435,419,178,028.06/18,194,418.60
  6. Step 6: Final answer
    x = 24,536,943.39

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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.