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Finding the Fourth Proportional to 18,009.63, 24,866.46 and 11,639.99

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Solution

The fourth proportional to 18,009.63, 24,866.46 and 11,639.99 is: 16,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.63 : 24,866.46 = 11,639.99 : x
  2. Step 2: Convert to fraction form
    18,009.63/24,866.46 = 11,639.99/x
  3. Step 3: Cross multiply
    18,009.63x = 24,866.46 × 11,639.99
  4. Step 4: Simplify right side
    18,009.63x = 289,445,407.90
  5. Step 5: Solve for x
    x = 289,445,407.90/18,009.63
  6. Step 6: Final answer
    x = 16,071.70

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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.