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Finding the Fourth Proportional to 25,842.70, 38,767.70 and 12,695.59

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Solution

The fourth proportional to 25,842.70, 38,767.70 and 12,695.59 is: 19,045.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,842.70 : 38,767.70 = 12,695.59 : x
  2. Step 2: Convert to fraction form
    25,842.70/38,767.70 = 12,695.59/x
  3. Step 3: Cross multiply
    25,842.70x = 38,767.70 × 12,695.59
  4. Step 4: Simplify right side
    25,842.70x = 492,178,824.44
  5. Step 5: Solve for x
    x = 492,178,824.44/25,842.70
  6. Step 6: Final answer
    x = 19,045.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.