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Finding the Fourth Proportional to 43,788.06, 65,691.70 and 14,208.88

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Solution

The fourth proportional to 43,788.06, 65,691.70 and 14,208.88 is: 21,316.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,788.06 : 65,691.70 = 14,208.88 : x
  2. Step 2: Convert to fraction form
    43,788.06/65,691.70 = 14,208.88/x
  3. Step 3: Cross multiply
    43,788.06x = 65,691.70 × 14,208.88
  4. Step 4: Simplify right side
    43,788.06x = 933,405,482.30
  5. Step 5: Solve for x
    x = 933,405,482.30/43,788.06
  6. Step 6: Final answer
    x = 21,316.44

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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.