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Finding the Fourth Proportional to 18,101.67, 24,980.22 and 10,143.69

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Solution

The fourth proportional to 18,101.67, 24,980.22 and 10,143.69 is: 13,998.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,101.67 : 24,980.22 = 10,143.69 : x
  2. Step 2: Convert to fraction form
    18,101.67/24,980.22 = 10,143.69/x
  3. Step 3: Cross multiply
    18,101.67x = 24,980.22 × 10,143.69
  4. Step 4: Simplify right side
    18,101.67x = 253,391,607.81
  5. Step 5: Solve for x
    x = 253,391,607.81/18,101.67
  6. Step 6: Final answer
    x = 13,998.24

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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.