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Finding the Fourth Proportional to 64,488.40, 96,732.60 and 33,384.40

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Solution

The fourth proportional to 64,488.40, 96,732.60 and 33,384.40 is: 50,076.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,488.40 : 96,732.60 = 33,384.40 : x
  2. Step 2: Convert to fraction form
    64,488.40/96,732.60 = 33,384.40/x
  3. Step 3: Cross multiply
    64,488.40x = 96,732.60 × 33,384.40
  4. Step 4: Simplify right side
    64,488.40x = 3,229,359,811.44
  5. Step 5: Solve for x
    x = 3,229,359,811.44/64,488.40
  6. Step 6: Final answer
    x = 50,076.60

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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.