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Finding the Fourth Proportional to 64,919.71, 97,378.55 and 33,311.54

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Solution

The fourth proportional to 64,919.71, 97,378.55 and 33,311.54 is: 49,966.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,919.71 : 97,378.55 = 33,311.54 : x
  2. Step 2: Convert to fraction form
    64,919.71/97,378.55 = 33,311.54/x
  3. Step 3: Cross multiply
    64,919.71x = 97,378.55 × 33,311.54
  4. Step 4: Simplify right side
    64,919.71x = 3,243,829,304.90
  5. Step 5: Solve for x
    x = 3,243,829,304.90/64,919.71
  6. Step 6: Final answer
    x = 49,966.79

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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.