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Finding the Fourth Proportional to 59,891.74, 89,905.65 and 30,342.94

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Solution

The fourth proportional to 59,891.74, 89,905.65 and 30,342.94 is: 45,548.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,891.74 : 89,905.65 = 30,342.94 : x
  2. Step 2: Convert to fraction form
    59,891.74/89,905.65 = 30,342.94/x
  3. Step 3: Cross multiply
    59,891.74x = 89,905.65 × 30,342.94
  4. Step 4: Simplify right side
    59,891.74x = 2,728,001,743.61
  5. Step 5: Solve for x
    x = 2,728,001,743.61/59,891.74
  6. Step 6: Final answer
    x = 45,548.88

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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.