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Finding the Fourth Proportional to 112,141.40, 168,241.80 and 48,934.40

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Solution

The fourth proportional to 112,141.40, 168,241.80 and 48,934.40 is: 73,414.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,141.40 : 168,241.80 = 48,934.40 : x
  2. Step 2: Convert to fraction form
    112,141.40/168,241.80 = 48,934.40/x
  3. Step 3: Cross multiply
    112,141.40x = 168,241.80 × 48,934.40
  4. Step 4: Simplify right side
    112,141.40x = 8,232,811,537.92
  5. Step 5: Solve for x
    x = 8,232,811,537.92/112,141.40
  6. Step 6: Final answer
    x = 73,414.56

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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.