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Finding the Fourth Proportional to 18,752.76, 25,871.32 and 10,790.68

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Solution

The fourth proportional to 18,752.76, 25,871.32 and 10,790.68 is: 14,886.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.76 : 25,871.32 = 10,790.68 : x
  2. Step 2: Convert to fraction form
    18,752.76/25,871.32 = 10,790.68/x
  3. Step 3: Cross multiply
    18,752.76x = 25,871.32 × 10,790.68
  4. Step 4: Simplify right side
    18,752.76x = 279,169,135.30
  5. Step 5: Solve for x
    x = 279,169,135.30/18,752.76
  6. Step 6: Final answer
    x = 14,886.83

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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.