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Finding the Fourth Proportional to 207,131.80, 310,467.30 and 113,704.60

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Solution

The fourth proportional to 207,131.80, 310,467.30 and 113,704.60 is: 170,430.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,131.80 : 310,467.30 = 113,704.60 : x
  2. Step 2: Convert to fraction form
    207,131.80/310,467.30 = 113,704.60/x
  3. Step 3: Cross multiply
    207,131.80x = 310,467.30 × 113,704.60
  4. Step 4: Simplify right side
    207,131.80x = 35,301,560,159.58
  5. Step 5: Solve for x
    x = 35,301,560,159.58/207,131.80
  6. Step 6: Final answer
    x = 170,430.42

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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.