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Finding the Fourth Proportional to 168,071.60, 252,107.40 and 43,412.60

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Solution

The fourth proportional to 168,071.60, 252,107.40 and 43,412.60 is: 65,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,071.60 : 252,107.40 = 43,412.60 : x
  2. Step 2: Convert to fraction form
    168,071.60/252,107.40 = 43,412.60/x
  3. Step 3: Cross multiply
    168,071.60x = 252,107.40 × 43,412.60
  4. Step 4: Simplify right side
    168,071.60x = 10,944,637,713.24
  5. Step 5: Solve for x
    x = 10,944,637,713.24/168,071.60
  6. Step 6: Final answer
    x = 65,118.90

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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.