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Finding the Fourth Proportional to 43,172.60, 64,629.30 and 25,633.40

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Solution

The fourth proportional to 43,172.60, 64,629.30 and 25,633.40 is: 38,373.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,172.60 : 64,629.30 = 25,633.40 : x
  2. Step 2: Convert to fraction form
    43,172.60/64,629.30 = 25,633.40/x
  3. Step 3: Cross multiply
    43,172.60x = 64,629.30 × 25,633.40
  4. Step 4: Simplify right side
    43,172.60x = 1,656,668,698.62
  5. Step 5: Solve for x
    x = 1,656,668,698.62/43,172.60
  6. Step 6: Final answer
    x = 38,373.15

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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.