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Finding the Fourth Proportional to 12,927.60, 17,842.41 and 7,622.10

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Solution

The fourth proportional to 12,927.60, 17,842.41 and 7,622.10 is: 10,519.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927.60 : 17,842.41 = 7,622.10 : x
  2. Step 2: Convert to fraction form
    12,927.60/17,842.41 = 7,622.10/x
  3. Step 3: Cross multiply
    12,927.60x = 17,842.41 × 7,622.10
  4. Step 4: Simplify right side
    12,927.60x = 135,996,633.26
  5. Step 5: Solve for x
    x = 135,996,633.26/12,927.60
  6. Step 6: Final answer
    x = 10,519.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.