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Finding the Fourth Proportional to 18,709.76, 25,819.33 and 10,326.26

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Solution

The fourth proportional to 18,709.76, 25,819.33 and 10,326.26 is: 14,250.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.76 : 25,819.33 = 10,326.26 : x
  2. Step 2: Convert to fraction form
    18,709.76/25,819.33 = 10,326.26/x
  3. Step 3: Cross multiply
    18,709.76x = 25,819.33 × 10,326.26
  4. Step 4: Simplify right side
    18,709.76x = 266,617,114.61
  5. Step 5: Solve for x
    x = 266,617,114.61/18,709.76
  6. Step 6: Final answer
    x = 14,250.16

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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.