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Finding the Fourth Proportional to 55,156.88, 76,091.28 and 33,928.40

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Solution

The fourth proportional to 55,156.88, 76,091.28 and 33,928.40 is: 46,805.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,156.88 : 76,091.28 = 33,928.40 : x
  2. Step 2: Convert to fraction form
    55,156.88/76,091.28 = 33,928.40/x
  3. Step 3: Cross multiply
    55,156.88x = 76,091.28 × 33,928.40
  4. Step 4: Simplify right side
    55,156.88x = 2,581,655,384.35
  5. Step 5: Solve for x
    x = 2,581,655,384.35/55,156.88
  6. Step 6: Final answer
    x = 46,805.68

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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.