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Finding the Fourth Proportional to 1,089,064.80, 1,630,486.80 and 1,057,960.80

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Solution

The fourth proportional to 1,089,064.80, 1,630,486.80 and 1,057,960.80 is: 1,583,919.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,064.80 : 1,630,486.80 = 1,057,960.80 : x
  2. Step 2: Convert to fraction form
    1,089,064.80/1,630,486.80 = 1,057,960.80/x
  3. Step 3: Cross multiply
    1,089,064.80x = 1,630,486.80 × 1,057,960.80
  4. Step 4: Simplify right side
    1,089,064.80x = 1,724,991,119,317.44
  5. Step 5: Solve for x
    x = 1,724,991,119,317.44/1,089,064.80
  6. Step 6: Final answer
    x = 1,583,919.63

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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.