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Finding the Fourth Proportional to 74,910.83, 112,346.80 and 29,930.31

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Solution

The fourth proportional to 74,910.83, 112,346.80 and 29,930.31 is: 44,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,910.83 : 112,346.80 = 29,930.31 : x
  2. Step 2: Convert to fraction form
    74,910.83/112,346.80 = 29,930.31/x
  3. Step 3: Cross multiply
    74,910.83x = 112,346.80 × 29,930.31
  4. Step 4: Simplify right side
    74,910.83x = 3,362,574,476.68
  5. Step 5: Solve for x
    x = 3,362,574,476.68/74,910.83
  6. Step 6: Final answer
    x = 44,887.70

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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.