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Finding the Fourth Proportional to 77,879.12, 107,473.08 and 44,345.12

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Solution

The fourth proportional to 77,879.12, 107,473.08 and 44,345.12 is: 61,196.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,879.12 : 107,473.08 = 44,345.12 : x
  2. Step 2: Convert to fraction form
    77,879.12/107,473.08 = 44,345.12/x
  3. Step 3: Cross multiply
    77,879.12x = 107,473.08 × 44,345.12
  4. Step 4: Simplify right side
    77,879.12x = 4,765,906,629.37
  5. Step 5: Solve for x
    x = 4,765,906,629.37/77,879.12
  6. Step 6: Final answer
    x = 61,196.21

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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.