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Finding the Fourth Proportional to 66,936,700.80, 100,405,051.20 and 66,936,700.80

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Solution

The fourth proportional to 66,936,700.80, 100,405,051.20 and 66,936,700.80 is: 100,405,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,936,700.80 : 100,405,051.20 = 66,936,700.80 : x
  2. Step 2: Convert to fraction form
    66,936,700.80/100,405,051.20 = 66,936,700.80/x
  3. Step 3: Cross multiply
    66,936,700.80x = 100,405,051.20 × 66,936,700.80
  4. Step 4: Simplify right side
    66,936,700.80x = 6,720,782,870,983,081
  5. Step 5: Solve for x
    x = 6,720,782,870,983,081/66,936,700.80
  6. Step 6: Final answer
    x = 100,405,051.20

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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.