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Finding the Fourth Proportional to 74,958.30, 112,480.65 and 28,244.70

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Solution

The fourth proportional to 74,958.30, 112,480.65 and 28,244.70 is: 42,383.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,958.30 : 112,480.65 = 28,244.70 : x
  2. Step 2: Convert to fraction form
    74,958.30/112,480.65 = 28,244.70/x
  3. Step 3: Cross multiply
    74,958.30x = 112,480.65 × 28,244.70
  4. Step 4: Simplify right side
    74,958.30x = 3,176,982,215.06
  5. Step 5: Solve for x
    x = 3,176,982,215.06/74,958.30
  6. Step 6: Final answer
    x = 42,383.33

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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.