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Finding the Fourth Proportional to 67,015.32, 100,564.52 and 38,948.59

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Solution

The fourth proportional to 67,015.32, 100,564.52 and 38,948.59 is: 58,447.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,015.32 : 100,564.52 = 38,948.59 : x
  2. Step 2: Convert to fraction form
    67,015.32/100,564.52 = 38,948.59/x
  3. Step 3: Cross multiply
    67,015.32x = 100,564.52 × 38,948.59
  4. Step 4: Simplify right side
    67,015.32x = 3,916,846,501.68
  5. Step 5: Solve for x
    x = 3,916,846,501.68/67,015.32
  6. Step 6: Final answer
    x = 58,447.03

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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.