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Finding the Fourth Proportional to 104,626.64, 144,383.84 and 56,879.84

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Solution

The fourth proportional to 104,626.64, 144,383.84 and 56,879.84 is: 78,493.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,626.64 : 144,383.84 = 56,879.84 : x
  2. Step 2: Convert to fraction form
    104,626.64/144,383.84 = 56,879.84/x
  3. Step 3: Cross multiply
    104,626.64x = 144,383.84 × 56,879.84
  4. Step 4: Simplify right side
    104,626.64x = 8,212,529,717.79
  5. Step 5: Solve for x
    x = 8,212,529,717.79/104,626.64
  6. Step 6: Final answer
    x = 78,493.68

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1.5x scale

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.