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Finding the Fourth Proportional to 100,610.69, 150,915.49 and 25,730.71

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Solution

The fourth proportional to 100,610.69, 150,915.49 and 25,730.71 is: 38,595.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,610.69 : 150,915.49 = 25,730.71 : x
  2. Step 2: Convert to fraction form
    100,610.69/150,915.49 = 25,730.71/x
  3. Step 3: Cross multiply
    100,610.69x = 150,915.49 × 25,730.71
  4. Step 4: Simplify right side
    100,610.69x = 3,883,162,266.08
  5. Step 5: Solve for x
    x = 3,883,162,266.08/100,610.69
  6. Step 6: Final answer
    x = 38,595.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.