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Finding the Fourth Proportional to 104,861.60, 156,964.35 and 82,554.20

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Solution

The fourth proportional to 104,861.60, 156,964.35 and 82,554.20 is: 123,573.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,861.60 : 156,964.35 = 82,554.20 : x
  2. Step 2: Convert to fraction form
    104,861.60/156,964.35 = 82,554.20/x
  3. Step 3: Cross multiply
    104,861.60x = 156,964.35 × 82,554.20
  4. Step 4: Simplify right side
    104,861.60x = 12,958,066,342.77
  5. Step 5: Solve for x
    x = 12,958,066,342.77/104,861.60
  6. Step 6: Final answer
    x = 123,573.04

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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.