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Finding the Fourth Proportional to 100,809,991.80, 151,214,987.70 and 100,809,991.80

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Solution

The fourth proportional to 100,809,991.80, 151,214,987.70 and 100,809,991.80 is: 151,214,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,809,991.80 : 151,214,987.70 = 100,809,991.80 : x
  2. Step 2: Convert to fraction form
    100,809,991.80/151,214,987.70 = 100,809,991.80/x
  3. Step 3: Cross multiply
    100,809,991.80x = 151,214,987.70 × 100,809,991.80
  4. Step 4: Simplify right side
    100,809,991.80x = 15,243,981,670,074,100
  5. Step 5: Solve for x
    x = 15,243,981,670,074,100/100,809,991.80
  6. Step 6: Final answer
    x = 151,214,987.70

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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.