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Finding the Fourth Proportional to 43,448.40, 65,075.40 and 35,672.40

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Solution

The fourth proportional to 43,448.40, 65,075.40 and 35,672.40 is: 53,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,448.40 : 65,075.40 = 35,672.40 : x
  2. Step 2: Convert to fraction form
    43,448.40/65,075.40 = 35,672.40/x
  3. Step 3: Cross multiply
    43,448.40x = 65,075.40 × 35,672.40
  4. Step 4: Simplify right side
    43,448.40x = 2,321,395,698.96
  5. Step 5: Solve for x
    x = 2,321,395,698.96/43,448.40
  6. Step 6: Final answer
    x = 53,428.80

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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.