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Finding the Fourth Proportional to 104,978,262.40, 157,467,393.60 and 74,367,260.80

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Solution

The fourth proportional to 104,978,262.40, 157,467,393.60 and 74,367,260.80 is: 111,550,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,978,262.40 : 157,467,393.60 = 74,367,260.80 : x
  2. Step 2: Convert to fraction form
    104,978,262.40/157,467,393.60 = 74,367,260.80/x
  3. Step 3: Cross multiply
    104,978,262.40x = 157,467,393.60 × 74,367,260.80
  4. Step 4: Simplify right side
    104,978,262.40x = 11,710,418,727,347,450
  5. Step 5: Solve for x
    x = 11,710,418,727,347,450/104,978,262.40
  6. Step 6: Final answer
    x = 111,550,891.20

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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.