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Finding the Fourth Proportional to 66,936,440.80, 100,404,661.20 and 66,936,440.80

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Solution

The fourth proportional to 66,936,440.80, 100,404,661.20 and 66,936,440.80 is: 100,404,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,936,440.80 : 100,404,661.20 = 66,936,440.80 : x
  2. Step 2: Convert to fraction form
    66,936,440.80/100,404,661.20 = 66,936,440.80/x
  3. Step 3: Cross multiply
    66,936,440.80x = 100,404,661.20 × 66,936,440.80
  4. Step 4: Simplify right side
    66,936,440.80x = 6,720,730,660,457,857
  5. Step 5: Solve for x
    x = 6,720,730,660,457,857/66,936,440.80
  6. Step 6: Final answer
    x = 100,404,661.20

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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.