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Finding the Fourth Proportional to 49,918.70, 74,768.70 and 43,357.70

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Solution

The fourth proportional to 49,918.70, 74,768.70 and 43,357.70 is: 64,941.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,918.70 : 74,768.70 = 43,357.70 : x
  2. Step 2: Convert to fraction form
    49,918.70/74,768.70 = 43,357.70/x
  3. Step 3: Cross multiply
    49,918.70x = 74,768.70 × 43,357.70
  4. Step 4: Simplify right side
    49,918.70x = 3,241,798,863.99
  5. Step 5: Solve for x
    x = 3,241,798,863.99/49,918.70
  6. Step 6: Final answer
    x = 64,941.57

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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.