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Finding the Fourth Proportional to 18,104.70, 24,985.17 and 10,555.89

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Solution

The fourth proportional to 18,104.70, 24,985.17 and 10,555.89 is: 14,567.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,104.70 : 24,985.17 = 10,555.89 : x
  2. Step 2: Convert to fraction form
    18,104.70/24,985.17 = 10,555.89/x
  3. Step 3: Cross multiply
    18,104.70x = 24,985.17 × 10,555.89
  4. Step 4: Simplify right side
    18,104.70x = 263,740,706.15
  5. Step 5: Solve for x
    x = 263,740,706.15/18,104.70
  6. Step 6: Final answer
    x = 14,567.53

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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.