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Finding the Fourth Proportional to 40,751,999.80, 61,127,999.70 and 40,751,999.80

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Solution

The fourth proportional to 40,751,999.80, 61,127,999.70 and 40,751,999.80 is: 61,127,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,751,999.80 : 61,127,999.70 = 40,751,999.80 : x
  2. Step 2: Convert to fraction form
    40,751,999.80/61,127,999.70 = 40,751,999.80/x
  3. Step 3: Cross multiply
    40,751,999.80x = 61,127,999.70 × 40,751,999.80
  4. Step 4: Simplify right side
    40,751,999.80x = 2,491,088,231,548,800
  5. Step 5: Solve for x
    x = 2,491,088,231,548,800/40,751,999.80
  6. Step 6: Final answer
    x = 61,127,999.70

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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.