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Finding the Fourth Proportional to 60,992,647.80, 91,404,990.90 and 40,464,007.80

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Solution

The fourth proportional to 60,992,647.80, 91,404,990.90 and 40,464,007.80 is: 60,640,296.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,992,647.80 : 91,404,990.90 = 40,464,007.80 : x
  2. Step 2: Convert to fraction form
    60,992,647.80/91,404,990.90 = 40,464,007.80/x
  3. Step 3: Cross multiply
    60,992,647.80x = 91,404,990.90 × 40,464,007.80
  4. Step 4: Simplify right side
    60,992,647.80x = 3,698,612,264,736,529
  5. Step 5: Solve for x
    x = 3,698,612,264,736,529/60,992,647.80
  6. Step 6: Final answer
    x = 60,640,296.79

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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.