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Finding the Fourth Proportional to 18,369.10, 25,349.65 and 10,411.15

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Solution

The fourth proportional to 18,369.10, 25,349.65 and 10,411.15 is: 14,367.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.10 : 25,349.65 = 10,411.15 : x
  2. Step 2: Convert to fraction form
    18,369.10/25,349.65 = 10,411.15/x
  3. Step 3: Cross multiply
    18,369.10x = 25,349.65 × 10,411.15
  4. Step 4: Simplify right side
    18,369.10x = 263,919,014.26
  5. Step 5: Solve for x
    x = 263,919,014.26/18,369.10
  6. Step 6: Final answer
    x = 14,367.55

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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.