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Finding the Fourth Proportional to 134,540.69, 201,712.20 and 64,469.21

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Solution

The fourth proportional to 134,540.69, 201,712.20 and 64,469.21 is: 96,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,540.69 : 201,712.20 = 64,469.21 : x
  2. Step 2: Convert to fraction form
    134,540.69/201,712.20 = 64,469.21/x
  3. Step 3: Cross multiply
    134,540.69x = 201,712.20 × 64,469.21
  4. Step 4: Simplify right side
    134,540.69x = 13,004,225,172.80
  5. Step 5: Solve for x
    x = 13,004,225,172.80/134,540.69
  6. Step 6: Final answer
    x = 96,656.45

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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.