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Finding the Fourth Proportional to 72,361.19, 108,354.85 and 49,941.05

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Solution

The fourth proportional to 72,361.19, 108,354.85 and 49,941.05 is: 74,782.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,361.19 : 108,354.85 = 49,941.05 : x
  2. Step 2: Convert to fraction form
    72,361.19/108,354.85 = 49,941.05/x
  3. Step 3: Cross multiply
    72,361.19x = 108,354.85 × 49,941.05
  4. Step 4: Simplify right side
    72,361.19x = 5,411,354,190.11
  5. Step 5: Solve for x
    x = 5,411,354,190.11/72,361.19
  6. Step 6: Final answer
    x = 74,782.55

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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.