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Finding the Fourth Proportional to 66,995,578.80, 100,440,224.10 and 36,703,441.80

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Solution

The fourth proportional to 66,995,578.80, 100,440,224.10 and 36,703,441.80 is: 55,026,047.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,995,578.80 : 100,440,224.10 = 36,703,441.80 : x
  2. Step 2: Convert to fraction form
    66,995,578.80/100,440,224.10 = 36,703,441.80/x
  3. Step 3: Cross multiply
    66,995,578.80x = 100,440,224.10 × 36,703,441.80
  4. Step 4: Simplify right side
    66,995,578.80x = 3,686,501,919,633,307
  5. Step 5: Solve for x
    x = 3,686,501,919,633,307/66,995,578.80
  6. Step 6: Final answer
    x = 55,026,047.77

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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.