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Finding the Fourth Proportional to 61,214,231.20, 91,821,346.80 and 61,214,231.20

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Solution

The fourth proportional to 61,214,231.20, 91,821,346.80 and 61,214,231.20 is: 91,821,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,214,231.20 : 91,821,346.80 = 61,214,231.20 : x
  2. Step 2: Convert to fraction form
    61,214,231.20/91,821,346.80 = 61,214,231.20/x
  3. Step 3: Cross multiply
    61,214,231.20x = 91,821,346.80 × 61,214,231.20
  4. Step 4: Simplify right side
    61,214,231.20x = 5,620,773,152,110,580
  5. Step 5: Solve for x
    x = 5,620,773,152,110,580/61,214,231.20
  6. Step 6: Final answer
    x = 91,821,346.80

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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.