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Finding the Fourth Proportional to 269,040.81, 403,421.08 and 100,422.48

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Solution

The fourth proportional to 269,040.81, 403,421.08 and 100,422.48 is: 150,581.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,040.81 : 403,421.08 = 100,422.48 : x
  2. Step 2: Convert to fraction form
    269,040.81/403,421.08 = 100,422.48/x
  3. Step 3: Cross multiply
    269,040.81x = 403,421.08 × 100,422.48
  4. Step 4: Simplify right side
    269,040.81x = 40,512,545,337.88
  5. Step 5: Solve for x
    x = 40,512,545,337.88/269,040.81
  6. Step 6: Final answer
    x = 150,581.41

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1.5x scale

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.