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Finding the Fourth Proportional to 100,809,211.55, 151,213,817.33 and 100,809,211.55

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Solution

The fourth proportional to 100,809,211.55, 151,213,817.33 and 100,809,211.55 is: 151,213,817.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,809,211.55 : 151,213,817.33 = 100,809,211.55 : x
  2. Step 2: Convert to fraction form
    100,809,211.55/151,213,817.33 = 100,809,211.55/x
  3. Step 3: Cross multiply
    100,809,211.55x = 151,213,817.33 × 100,809,211.55
  4. Step 4: Simplify right side
    100,809,211.55x = 15,243,745,699,998,978
  5. Step 5: Solve for x
    x = 15,243,745,699,998,978/100,809,211.55
  6. Step 6: Final answer
    x = 151,213,817.33

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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.