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Finding the Fourth Proportional to 55,575.94, 76,694.80 and 30,425.44

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Solution

The fourth proportional to 55,575.94, 76,694.80 and 30,425.44 is: 41,987.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,575.94 : 76,694.80 = 30,425.44 : x
  2. Step 2: Convert to fraction form
    55,575.94/76,694.80 = 30,425.44/x
  3. Step 3: Cross multiply
    55,575.94x = 76,694.80 × 30,425.44
  4. Step 4: Simplify right side
    55,575.94x = 2,333,473,035.71
  5. Step 5: Solve for x
    x = 2,333,473,035.71/55,575.94
  6. Step 6: Final answer
    x = 41,987.11

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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.