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Finding the Fourth Proportional to 92,964.96, 128,324.64 and 55,239.12

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Solution

The fourth proportional to 92,964.96, 128,324.64 and 55,239.12 is: 76,249.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,964.96 : 128,324.64 = 55,239.12 : x
  2. Step 2: Convert to fraction form
    92,964.96/128,324.64 = 55,239.12/x
  3. Step 3: Cross multiply
    92,964.96x = 128,324.64 × 55,239.12
  4. Step 4: Simplify right side
    92,964.96x = 7,088,540,187.92
  5. Step 5: Solve for x
    x = 7,088,540,187.92/92,964.96
  6. Step 6: Final answer
    x = 76,249.59

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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.