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Finding the Fourth Proportional to 76,601.82, 114,913.51 and 20,443.77

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Solution

The fourth proportional to 76,601.82, 114,913.51 and 20,443.77 is: 30,668.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,601.82 : 114,913.51 = 20,443.77 : x
  2. Step 2: Convert to fraction form
    76,601.82/114,913.51 = 20,443.77/x
  3. Step 3: Cross multiply
    76,601.82x = 114,913.51 × 20,443.77
  4. Step 4: Simplify right side
    76,601.82x = 2,349,265,317.22
  5. Step 5: Solve for x
    x = 2,349,265,317.22/76,601.82
  6. Step 6: Final answer
    x = 30,668.53

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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.