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Finding the Fourth Proportional to 169,978,645.80, 254,967,968.70 and 132,990,352.20

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Solution

The fourth proportional to 169,978,645.80, 254,967,968.70 and 132,990,352.20 is: 199,485,528.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,978,645.80 : 254,967,968.70 = 132,990,352.20 : x
  2. Step 2: Convert to fraction form
    169,978,645.80/254,967,968.70 = 132,990,352.20/x
  3. Step 3: Cross multiply
    169,978,645.80x = 254,967,968.70 × 132,990,352.20
  4. Step 4: Simplify right side
    169,978,645.80x = 33,908,279,957,131,576
  5. Step 5: Solve for x
    x = 33,908,279,957,131,576/169,978,645.80
  6. Step 6: Final answer
    x = 199,485,528.30

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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.