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Finding the Fourth Proportional to 64,517.51, 96,729.08 and 43,405.06

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Solution

The fourth proportional to 64,517.51, 96,729.08 and 43,405.06 is: 65,075.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,517.51 : 96,729.08 = 43,405.06 : x
  2. Step 2: Convert to fraction form
    64,517.51/96,729.08 = 43,405.06/x
  3. Step 3: Cross multiply
    64,517.51x = 96,729.08 × 43,405.06
  4. Step 4: Simplify right side
    64,517.51x = 4,198,531,304.12
  5. Step 5: Solve for x
    x = 4,198,531,304.12/64,517.51
  6. Step 6: Final answer
    x = 65,075.85

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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.