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Finding the Fourth Proportional to 70,969,907.20, 106,454,860.80 and 63,789,548.80

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Solution

The fourth proportional to 70,969,907.20, 106,454,860.80 and 63,789,548.80 is: 95,684,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,969,907.20 : 106,454,860.80 = 63,789,548.80 : x
  2. Step 2: Convert to fraction form
    70,969,907.20/106,454,860.80 = 63,789,548.80/x
  3. Step 3: Cross multiply
    70,969,907.20x = 106,454,860.80 × 63,789,548.80
  4. Step 4: Simplify right side
    70,969,907.20x = 6,790,707,537,998,807
  5. Step 5: Solve for x
    x = 6,790,707,537,998,807/70,969,907.20
  6. Step 6: Final answer
    x = 95,684,323.20

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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.