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Finding the Fourth Proportional to 31,996.80, 48,009.60 and 14,457.60

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Solution

The fourth proportional to 31,996.80, 48,009.60 and 14,457.60 is: 21,692.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,996.80 : 48,009.60 = 14,457.60 : x
  2. Step 2: Convert to fraction form
    31,996.80/48,009.60 = 14,457.60/x
  3. Step 3: Cross multiply
    31,996.80x = 48,009.60 × 14,457.60
  4. Step 4: Simplify right side
    31,996.80x = 694,103,592.96
  5. Step 5: Solve for x
    x = 694,103,592.96/31,996.80
  6. Step 6: Final answer
    x = 21,692.91

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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.