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Finding the Fourth Proportional to 56,908.92, 78,541.74 and 31,763.64

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Solution

The fourth proportional to 56,908.92, 78,541.74 and 31,763.64 is: 43,837.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,908.92 : 78,541.74 = 31,763.64 : x
  2. Step 2: Convert to fraction form
    56,908.92/78,541.74 = 31,763.64/x
  3. Step 3: Cross multiply
    56,908.92x = 78,541.74 × 31,763.64
  4. Step 4: Simplify right side
    56,908.92x = 2,494,771,554.33
  5. Step 5: Solve for x
    x = 2,494,771,554.33/56,908.92
  6. Step 6: Final answer
    x = 43,837.97

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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.