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Finding the Fourth Proportional to 12,009.71, 18,025.58 and 6,090.71

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Solution

The fourth proportional to 12,009.71, 18,025.58 and 6,090.71 is: 9,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.71 : 18,025.58 = 6,090.71 : x
  2. Step 2: Convert to fraction form
    12,009.71/18,025.58 = 6,090.71/x
  3. Step 3: Cross multiply
    12,009.71x = 18,025.58 × 6,090.71
  4. Step 4: Simplify right side
    12,009.71x = 109,788,564.29
  5. Step 5: Solve for x
    x = 109,788,564.29/12,009.71
  6. Step 6: Final answer
    x = 9,141.65

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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.