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Finding the Fourth Proportional to 3,828,136.56, 5,742,226.56 and 988,054.56

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Solution

The fourth proportional to 3,828,136.56, 5,742,226.56 and 988,054.56 is: 1,482,087.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828,136.56 : 5,742,226.56 = 988,054.56 : x
  2. Step 2: Convert to fraction form
    3,828,136.56/5,742,226.56 = 988,054.56/x
  3. Step 3: Cross multiply
    3,828,136.56x = 5,742,226.56 × 988,054.56
  4. Step 4: Simplify right side
    3,828,136.56x = 5,673,633,137,161.11
  5. Step 5: Solve for x
    x = 5,673,633,137,161.11/3,828,136.56
  6. Step 6: Final answer
    x = 1,482,087.45

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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.