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Finding the Fourth Proportional to 13,885,910.80, 20,793,436.80 and 11,051,558.80

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Solution

The fourth proportional to 13,885,910.80, 20,793,436.80 and 11,051,558.80 is: 16,549,140.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885,910.80 : 20,793,436.80 = 11,051,558.80 : x
  2. Step 2: Convert to fraction form
    13,885,910.80/20,793,436.80 = 11,051,558.80/x
  3. Step 3: Cross multiply
    13,885,910.80x = 20,793,436.80 × 11,051,558.80
  4. Step 4: Simplify right side
    13,885,910.80x = 229,799,889,449,283.88
  5. Step 5: Solve for x
    x = 229,799,889,449,283.88/13,885,910.80
  6. Step 6: Final answer
    x = 16,549,140.55

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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.