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Finding the Fourth Proportional to 169,978,700.30, 254,968,050.45 and 132,990,406.70

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Solution

The fourth proportional to 169,978,700.30, 254,968,050.45 and 132,990,406.70 is: 199,485,610.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,978,700.30 : 254,968,050.45 = 132,990,406.70 : x
  2. Step 2: Convert to fraction form
    169,978,700.30/254,968,050.45 = 132,990,406.70/x
  3. Step 3: Cross multiply
    169,978,700.30x = 254,968,050.45 × 132,990,406.70
  4. Step 4: Simplify right side
    169,978,700.30x = 33,908,304,724,851,616
  5. Step 5: Solve for x
    x = 33,908,304,724,851,616/169,978,700.30
  6. Step 6: Final answer
    x = 199,485,610.05

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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.