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Finding the Fourth Proportional to 70,858.98, 106,281.96 and 21,610.98

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Solution

The fourth proportional to 70,858.98, 106,281.96 and 21,610.98 is: 32,414.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,858.98 : 106,281.96 = 21,610.98 : x
  2. Step 2: Convert to fraction form
    70,858.98/106,281.96 = 21,610.98/x
  3. Step 3: Cross multiply
    70,858.98x = 106,281.96 × 21,610.98
  4. Step 4: Simplify right side
    70,858.98x = 2,296,857,311.92
  5. Step 5: Solve for x
    x = 2,296,857,311.92/70,858.98
  6. Step 6: Final answer
    x = 32,414.48

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1.5x scale

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.