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Finding the Fourth Proportional to 13,041.73, 18,005.39 and 8,572.96

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Solution

The fourth proportional to 13,041.73, 18,005.39 and 8,572.96 is: 11,835.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,041.73 : 18,005.39 = 8,572.96 : x
  2. Step 2: Convert to fraction form
    13,041.73/18,005.39 = 8,572.96/x
  3. Step 3: Cross multiply
    13,041.73x = 18,005.39 × 8,572.96
  4. Step 4: Simplify right side
    13,041.73x = 154,359,488.25
  5. Step 5: Solve for x
    x = 154,359,488.25/13,041.73
  6. Step 6: Final answer
    x = 11,835.81

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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.