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Finding the Fourth Proportional to 56,085.95, 84,069.84 and 18,635.96

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Solution

The fourth proportional to 56,085.95, 84,069.84 and 18,635.96 is: 27,934.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,085.95 : 84,069.84 = 18,635.96 : x
  2. Step 2: Convert to fraction form
    56,085.95/84,069.84 = 18,635.96/x
  3. Step 3: Cross multiply
    56,085.95x = 84,069.84 × 18,635.96
  4. Step 4: Simplify right side
    56,085.95x = 1,566,722,175.45
  5. Step 5: Solve for x
    x = 1,566,722,175.45/56,085.95
  6. Step 6: Final answer
    x = 27,934.31

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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.