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Finding the Fourth Proportional to 18,175.19, 25,079.69 and 10,215.72

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Solution

The fourth proportional to 18,175.19, 25,079.69 and 10,215.72 is: 14,096.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,175.19 : 25,079.69 = 10,215.72 : x
  2. Step 2: Convert to fraction form
    18,175.19/25,079.69 = 10,215.72/x
  3. Step 3: Cross multiply
    18,175.19x = 25,079.69 × 10,215.72
  4. Step 4: Simplify right side
    18,175.19x = 256,207,116.27
  5. Step 5: Solve for x
    x = 256,207,116.27/18,175.19
  6. Step 6: Final answer
    x = 14,096.53

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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.