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Finding the Fourth Proportional to 245,825,991.20, 368,738,986.80 and 245,825,991.20

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Solution

The fourth proportional to 245,825,991.20, 368,738,986.80 and 245,825,991.20 is: 368,738,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,825,991.20 : 368,738,986.80 = 245,825,991.20 : x
  2. Step 2: Convert to fraction form
    245,825,991.20/368,738,986.80 = 245,825,991.20/x
  3. Step 3: Cross multiply
    245,825,991.20x = 368,738,986.80 × 245,825,991.20
  4. Step 4: Simplify right side
    245,825,991.20x = 90,645,626,924,193,712
  5. Step 5: Solve for x
    x = 90,645,626,924,193,712/245,825,991.20
  6. Step 6: Final answer
    x = 368,738,986.80

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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.