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Finding the Fourth Proportional to 112,357.53, 168,471.09 and 53,192.70

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Solution

The fourth proportional to 112,357.53, 168,471.09 and 53,192.70 is: 79,758.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,357.53 : 168,471.09 = 53,192.70 : x
  2. Step 2: Convert to fraction form
    112,357.53/168,471.09 = 53,192.70/x
  3. Step 3: Cross multiply
    112,357.53x = 168,471.09 × 53,192.70
  4. Step 4: Simplify right side
    112,357.53x = 8,961,432,149.04
  5. Step 5: Solve for x
    x = 8,961,432,149.04/112,357.53
  6. Step 6: Final answer
    x = 79,758.18

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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.