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Finding the Fourth Proportional to 112,648.50, 168,310.80 and 108,723.60

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Solution

The fourth proportional to 112,648.50, 168,310.80 and 108,723.60 is: 162,446.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,648.50 : 168,310.80 = 108,723.60 : x
  2. Step 2: Convert to fraction form
    112,648.50/168,310.80 = 108,723.60/x
  3. Step 3: Cross multiply
    112,648.50x = 168,310.80 × 108,723.60
  4. Step 4: Simplify right side
    112,648.50x = 18,299,356,094.88
  5. Step 5: Solve for x
    x = 18,299,356,094.88/112,648.50
  6. Step 6: Final answer
    x = 162,446.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.