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Finding the Fourth Proportional to 43,987.63, 65,980.53 and 10,707.88

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Solution

The fourth proportional to 43,987.63, 65,980.53 and 10,707.88 is: 16,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,987.63 : 65,980.53 = 10,707.88 : x
  2. Step 2: Convert to fraction form
    43,987.63/65,980.53 = 10,707.88/x
  3. Step 3: Cross multiply
    43,987.63x = 65,980.53 × 10,707.88
  4. Step 4: Simplify right side
    43,987.63x = 706,511,597.58
  5. Step 5: Solve for x
    x = 706,511,597.58/43,987.63
  6. Step 6: Final answer
    x = 16,061.60

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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.