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Finding the Fourth Proportional to 18,624.67, 25,699.89 and 10,666.42

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Solution

The fourth proportional to 18,624.67, 25,699.89 and 10,666.42 is: 14,718.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.67 : 25,699.89 = 10,666.42 : x
  2. Step 2: Convert to fraction form
    18,624.67/25,699.89 = 10,666.42/x
  3. Step 3: Cross multiply
    18,624.67x = 25,699.89 × 10,666.42
  4. Step 4: Simplify right side
    18,624.67x = 274,125,820.69
  5. Step 5: Solve for x
    x = 274,125,820.69/18,624.67
  6. Step 6: Final answer
    x = 14,718.43

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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.