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Finding the Fourth Proportional to 18,496,671.40, 27,745,007.10 and 17,740,844.20

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Solution

The fourth proportional to 18,496,671.40, 27,745,007.10 and 17,740,844.20 is: 26,611,266.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,496,671.40 : 27,745,007.10 = 17,740,844.20 : x
  2. Step 2: Convert to fraction form
    18,496,671.40/27,745,007.10 = 17,740,844.20/x
  3. Step 3: Cross multiply
    18,496,671.40x = 27,745,007.10 × 17,740,844.20
  4. Step 4: Simplify right side
    18,496,671.40x = 492,219,848,288,993.81
  5. Step 5: Solve for x
    x = 492,219,848,288,993.81/18,496,671.40
  6. Step 6: Final answer
    x = 26,611,266.30

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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.