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Finding the Fourth Proportional to 65,883.90, 98,835.44 and 21,499.73

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Solution

The fourth proportional to 65,883.90, 98,835.44 and 21,499.73 is: 32,252.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,883.90 : 98,835.44 = 21,499.73 : x
  2. Step 2: Convert to fraction form
    65,883.90/98,835.44 = 21,499.73/x
  3. Step 3: Cross multiply
    65,883.90x = 98,835.44 × 21,499.73
  4. Step 4: Simplify right side
    65,883.90x = 2,124,935,274.43
  5. Step 5: Solve for x
    x = 2,124,935,274.43/65,883.90
  6. Step 6: Final answer
    x = 32,252.72

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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.