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Finding the Fourth Proportional to 18,758.73, 25,886.74 and 10,260.64

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Solution

The fourth proportional to 18,758.73, 25,886.74 and 10,260.64 is: 14,159.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.73 : 25,886.74 = 10,260.64 : x
  2. Step 2: Convert to fraction form
    18,758.73/25,886.74 = 10,260.64/x
  3. Step 3: Cross multiply
    18,758.73x = 25,886.74 × 10,260.64
  4. Step 4: Simplify right side
    18,758.73x = 265,614,519.91
  5. Step 5: Solve for x
    x = 265,614,519.91/18,758.73
  6. Step 6: Final answer
    x = 14,159.52

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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.