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Finding the Fourth Proportional to 112,465.68, 168,879.24 and 74,573.48

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Solution

The fourth proportional to 112,465.68, 168,879.24 and 74,573.48 is: 111,980.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,465.68 : 168,879.24 = 74,573.48 : x
  2. Step 2: Convert to fraction form
    112,465.68/168,879.24 = 74,573.48/x
  3. Step 3: Cross multiply
    112,465.68x = 168,879.24 × 74,573.48
  4. Step 4: Simplify right side
    112,465.68x = 12,593,912,626.56
  5. Step 5: Solve for x
    x = 12,593,912,626.56/112,465.68
  6. Step 6: Final answer
    x = 111,980.05

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1.5x scale

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.