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Finding the Fourth Proportional to 18,071.25, 24,938.45 and 10,114.21

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Solution

The fourth proportional to 18,071.25, 24,938.45 and 10,114.21 is: 13,957.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,071.25 : 24,938.45 = 10,114.21 : x
  2. Step 2: Convert to fraction form
    18,071.25/24,938.45 = 10,114.21/x
  3. Step 3: Cross multiply
    18,071.25x = 24,938.45 × 10,114.21
  4. Step 4: Simplify right side
    18,071.25x = 252,232,720.37
  5. Step 5: Solve for x
    x = 252,232,720.37/18,071.25
  6. Step 6: Final answer
    x = 13,957.68

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Double scale
Find fourth proportional to 18,072.25, 24,939.83 and 10,115.21
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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.