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Finding the Fourth Proportional to 262,361,676.80, 393,780,460.80 and 133,059,238.40

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Solution

The fourth proportional to 262,361,676.80, 393,780,460.80 and 133,059,238.40 is: 199,709,533.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,361,676.80 : 393,780,460.80 = 133,059,238.40 : x
  2. Step 2: Convert to fraction form
    262,361,676.80/393,780,460.80 = 133,059,238.40/x
  3. Step 3: Cross multiply
    262,361,676.80x = 393,780,460.80 × 133,059,238.40
  4. Step 4: Simplify right side
    262,361,676.80x = 52,396,128,210,849,056
  5. Step 5: Solve for x
    x = 52,396,128,210,849,056/262,361,676.80
  6. Step 6: Final answer
    x = 199,709,533.99

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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.