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Finding the Fourth Proportional to 77,656.41, 116,484.77 and 21,496.68

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Solution

The fourth proportional to 77,656.41, 116,484.77 and 21,496.68 is: 32,245.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,656.41 : 116,484.77 = 21,496.68 : x
  2. Step 2: Convert to fraction form
    77,656.41/116,484.77 = 21,496.68/x
  3. Step 3: Cross multiply
    77,656.41x = 116,484.77 × 21,496.68
  4. Step 4: Simplify right side
    77,656.41x = 2,504,035,879.31
  5. Step 5: Solve for x
    x = 2,504,035,879.31/77,656.41
  6. Step 6: Final answer
    x = 32,245.06

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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.