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Finding the Fourth Proportional to 55,661.50, 76,813.14 and 33,305.50

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Solution

The fourth proportional to 55,661.50, 76,813.14 and 33,305.50 is: 45,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,661.50 : 76,813.14 = 33,305.50 : x
  2. Step 2: Convert to fraction form
    55,661.50/76,813.14 = 33,305.50/x
  3. Step 3: Cross multiply
    55,661.50x = 76,813.14 × 33,305.50
  4. Step 4: Simplify right side
    55,661.50x = 2,558,300,034.27
  5. Step 5: Solve for x
    x = 2,558,300,034.27/55,661.50
  6. Step 6: Final answer
    x = 45,961.75

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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.