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Finding the Fourth Proportional to 13,652.76, 18,836.64 and 8,341.92

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Solution

The fourth proportional to 13,652.76, 18,836.64 and 8,341.92 is: 11,509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,652.76 : 18,836.64 = 8,341.92 : x
  2. Step 2: Convert to fraction form
    13,652.76/18,836.64 = 8,341.92/x
  3. Step 3: Cross multiply
    13,652.76x = 18,836.64 × 8,341.92
  4. Step 4: Simplify right side
    13,652.76x = 157,133,743.95
  5. Step 5: Solve for x
    x = 157,133,743.95/13,652.76
  6. Step 6: Final answer
    x = 11,509.30

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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.