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Finding the Fourth Proportional to 72,363.78, 99,896.22 and 48,506.04

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Solution

The fourth proportional to 72,363.78, 99,896.22 and 48,506.04 is: 66,961.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,363.78 : 99,896.22 = 48,506.04 : x
  2. Step 2: Convert to fraction form
    72,363.78/99,896.22 = 48,506.04/x
  3. Step 3: Cross multiply
    72,363.78x = 99,896.22 × 48,506.04
  4. Step 4: Simplify right side
    72,363.78x = 4,845,570,043.17
  5. Step 5: Solve for x
    x = 4,845,570,043.17/72,363.78
  6. Step 6: Final answer
    x = 66,961.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.