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Finding the Fourth Proportional to 74,930.39, 112,322.53 and 29,938.33

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Solution

The fourth proportional to 74,930.39, 112,322.53 and 29,938.33 is: 44,878.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,930.39 : 112,322.53 = 29,938.33 : x
  2. Step 2: Convert to fraction form
    74,930.39/112,322.53 = 29,938.33/x
  3. Step 3: Cross multiply
    74,930.39x = 112,322.53 × 29,938.33
  4. Step 4: Simplify right side
    74,930.39x = 3,362,749,147.40
  5. Step 5: Solve for x
    x = 3,362,749,147.40/74,930.39
  6. Step 6: Final answer
    x = 44,878.31

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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.