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Finding the Fourth Proportional to 18,668.61, 25,762.58 and 10,170.71

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Solution

The fourth proportional to 18,668.61, 25,762.58 and 10,170.71 is: 14,035.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.61 : 25,762.58 = 10,170.71 : x
  2. Step 2: Convert to fraction form
    18,668.61/25,762.58 = 10,170.71/x
  3. Step 3: Cross multiply
    18,668.61x = 25,762.58 × 10,170.71
  4. Step 4: Simplify right side
    18,668.61x = 262,023,743.58
  5. Step 5: Solve for x
    x = 262,023,743.58/18,668.61
  6. Step 6: Final answer
    x = 14,035.53

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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.