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Finding the Fourth Proportional to 18,105.63, 24,985.89 and 10,148.19

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Solution

The fourth proportional to 18,105.63, 24,985.89 and 10,148.19 is: 14,004.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.63 : 24,985.89 = 10,148.19 : x
  2. Step 2: Convert to fraction form
    18,105.63/24,985.89 = 10,148.19/x
  3. Step 3: Cross multiply
    18,105.63x = 24,985.89 × 10,148.19
  4. Step 4: Simplify right side
    18,105.63x = 253,561,559.04
  5. Step 5: Solve for x
    x = 253,561,559.04/18,105.63
  6. Step 6: Final answer
    x = 14,004.57

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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.