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Finding the Fourth Proportional to 123,775,857.80, 185,663,786.70 and 123,775,857.80

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Solution

The fourth proportional to 123,775,857.80, 185,663,786.70 and 123,775,857.80 is: 185,663,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,775,857.80 : 185,663,786.70 = 123,775,857.80 : x
  2. Step 2: Convert to fraction form
    123,775,857.80/185,663,786.70 = 123,775,857.80/x
  3. Step 3: Cross multiply
    123,775,857.80x = 185,663,786.70 × 123,775,857.80
  4. Step 4: Simplify right side
    123,775,857.80x = 22,980,694,461,188,728
  5. Step 5: Solve for x
    x = 22,980,694,461,188,728/123,775,857.80
  6. Step 6: Final answer
    x = 185,663,786.70

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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.