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Finding the Fourth Proportional to 28,964,512.80, 43,334,794.80 and 18,886,816.80

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Solution

The fourth proportional to 28,964,512.80, 43,334,794.80 and 18,886,816.80 is: 28,257,210.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,964,512.80 : 43,334,794.80 = 18,886,816.80 : x
  2. Step 2: Convert to fraction form
    28,964,512.80/43,334,794.80 = 18,886,816.80/x
  3. Step 3: Cross multiply
    28,964,512.80x = 43,334,794.80 × 18,886,816.80
  4. Step 4: Simplify right side
    28,964,512.80x = 818,456,330,453,192.62
  5. Step 5: Solve for x
    x = 818,456,330,453,192.62/28,964,512.80
  6. Step 6: Final answer
    x = 28,257,210.34

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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.