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Finding the Fourth Proportional to 100,812,138.80, 151,218,208.20 and 100,812,138.80

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Solution

The fourth proportional to 100,812,138.80, 151,218,208.20 and 100,812,138.80 is: 151,218,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,812,138.80 : 151,218,208.20 = 100,812,138.80 : x
  2. Step 2: Convert to fraction form
    100,812,138.80/151,218,208.20 = 100,812,138.80/x
  3. Step 3: Cross multiply
    100,812,138.80x = 151,218,208.20 × 100,812,138.80
  4. Step 4: Simplify right side
    100,812,138.80x = 15,244,630,994,145,696
  5. Step 5: Solve for x
    x = 15,244,630,994,145,696/100,812,138.80
  6. Step 6: Final answer
    x = 151,218,208.20

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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.