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Finding the Fourth Proportional to 56,579.96, 84,870.06 and 21,049.07

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Solution

The fourth proportional to 56,579.96, 84,870.06 and 21,049.07 is: 31,573.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,579.96 : 84,870.06 = 21,049.07 : x
  2. Step 2: Convert to fraction form
    56,579.96/84,870.06 = 21,049.07/x
  3. Step 3: Cross multiply
    56,579.96x = 84,870.06 × 21,049.07
  4. Step 4: Simplify right side
    56,579.96x = 1,786,436,046.02
  5. Step 5: Solve for x
    x = 1,786,436,046.02/56,579.96
  6. Step 6: Final answer
    x = 31,573.65

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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.