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Finding the Fourth Proportional to 4,978,719.60, 7,468,079.40 and 1,613,266.80

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Solution

The fourth proportional to 4,978,719.60, 7,468,079.40 and 1,613,266.80 is: 2,419,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978,719.60 : 7,468,079.40 = 1,613,266.80 : x
  2. Step 2: Convert to fraction form
    4,978,719.60/7,468,079.40 = 1,613,266.80/x
  3. Step 3: Cross multiply
    4,978,719.60x = 7,468,079.40 × 1,613,266.80
  4. Step 4: Simplify right side
    4,978,719.60x = 12,048,004,555,783.92
  5. Step 5: Solve for x
    x = 12,048,004,555,783.92/4,978,719.60
  6. Step 6: Final answer
    x = 2,419,900.20

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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.