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Finding the Fourth Proportional to 60,992,578.80, 91,404,887.40 and 40,463,938.80

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Solution

The fourth proportional to 60,992,578.80, 91,404,887.40 and 40,463,938.80 is: 60,640,193.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,992,578.80 : 91,404,887.40 = 40,463,938.80 : x
  2. Step 2: Convert to fraction form
    60,992,578.80/91,404,887.40 = 40,463,938.80/x
  3. Step 3: Cross multiply
    60,992,578.80x = 91,404,887.40 × 40,463,938.80
  4. Step 4: Simplify right side
    60,992,578.80x = 3,698,601,769,774,491
  5. Step 5: Solve for x
    x = 3,698,601,769,774,491/60,992,578.80
  6. Step 6: Final answer
    x = 60,640,193.32

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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.