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Finding the Fourth Proportional to 18,668,845.20, 27,970,090.20 and 16,014,637.20

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Solution

The fourth proportional to 18,668,845.20, 27,970,090.20 and 16,014,637.20 is: 23,993,495.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668,845.20 : 27,970,090.20 = 16,014,637.20 : x
  2. Step 2: Convert to fraction form
    18,668,845.20/27,970,090.20 = 16,014,637.20/x
  3. Step 3: Cross multiply
    18,668,845.20x = 27,970,090.20 × 16,014,637.20
  4. Step 4: Simplify right side
    18,668,845.20x = 447,930,847,004,275.44
  5. Step 5: Solve for x
    x = 447,930,847,004,275.44/18,668,845.20
  6. Step 6: Final answer
    x = 23,993,495.16

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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.