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Finding the Fourth Proportional to 111,993,855.44, 154,552,181.08 and 64,978,923.10

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Solution

The fourth proportional to 111,993,855.44, 154,552,181.08 and 64,978,923.10 is: 89,671,297.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,993,855.44 : 154,552,181.08 = 64,978,923.10 : x
  2. Step 2: Convert to fraction form
    111,993,855.44/154,552,181.08 = 64,978,923.10/x
  3. Step 3: Cross multiply
    111,993,855.44x = 154,552,181.08 × 64,978,923.10
  4. Step 4: Simplify right side
    111,993,855.44x = 10,042,634,289,334,596
  5. Step 5: Solve for x
    x = 10,042,634,289,334,596/111,993,855.44
  6. Step 6: Final answer
    x = 89,671,297.14

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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.