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Finding the Fourth Proportional to 141,015.87, 194,491.92 and 87,330.69

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Solution

The fourth proportional to 141,015.87, 194,491.92 and 87,330.69 is: 120,448.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,015.87 : 194,491.92 = 87,330.69 : x
  2. Step 2: Convert to fraction form
    141,015.87/194,491.92 = 87,330.69/x
  3. Step 3: Cross multiply
    141,015.87x = 194,491.92 × 87,330.69
  4. Step 4: Simplify right side
    141,015.87x = 16,985,113,573.02
  5. Step 5: Solve for x
    x = 16,985,113,573.02/141,015.87
  6. Step 6: Final answer
    x = 120,448.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.