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Finding the Fourth Proportional to 18,700.84, 25,806.09 and 10,317.34

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Solution

The fourth proportional to 18,700.84, 25,806.09 and 10,317.34 is: 14,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,700.84 : 25,806.09 = 10,317.34 : x
  2. Step 2: Convert to fraction form
    18,700.84/25,806.09 = 10,317.34/x
  3. Step 3: Cross multiply
    18,700.84x = 25,806.09 × 10,317.34
  4. Step 4: Simplify right side
    18,700.84x = 266,250,204.60
  5. Step 5: Solve for x
    x = 266,250,204.60/18,700.84
  6. Step 6: Final answer
    x = 14,237.34

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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.