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Finding the Fourth Proportional to 58,399.25, 87,580.31 and 18,946.98

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Solution

The fourth proportional to 58,399.25, 87,580.31 and 18,946.98 is: 28,414.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,399.25 : 87,580.31 = 18,946.98 : x
  2. Step 2: Convert to fraction form
    58,399.25/87,580.31 = 18,946.98/x
  3. Step 3: Cross multiply
    58,399.25x = 87,580.31 × 18,946.98
  4. Step 4: Simplify right side
    58,399.25x = 1,659,382,287.23
  5. Step 5: Solve for x
    x = 1,659,382,287.23/58,399.25
  6. Step 6: Final answer
    x = 28,414.45

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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.