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Finding the Fourth Proportional to 56,913.75, 85,370.49 and 19,474.20

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Solution

The fourth proportional to 56,913.75, 85,370.49 and 19,474.20 is: 29,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,913.75 : 85,370.49 = 19,474.20 : x
  2. Step 2: Convert to fraction form
    56,913.75/85,370.49 = 19,474.20/x
  3. Step 3: Cross multiply
    56,913.75x = 85,370.49 × 19,474.20
  4. Step 4: Simplify right side
    56,913.75x = 1,662,521,996.36
  5. Step 5: Solve for x
    x = 1,662,521,996.36/56,913.75
  6. Step 6: Final answer
    x = 29,211.25

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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.