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Finding the Fourth Proportional to 66,694.37, 99,930.49 and 46,931.41

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Solution

The fourth proportional to 66,694.37, 99,930.49 and 46,931.41 is: 70,318.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,694.37 : 99,930.49 = 46,931.41 : x
  2. Step 2: Convert to fraction form
    66,694.37/99,930.49 = 46,931.41/x
  3. Step 3: Cross multiply
    66,694.37x = 99,930.49 × 46,931.41
  4. Step 4: Simplify right side
    66,694.37x = 4,689,878,797.69
  5. Step 5: Solve for x
    x = 4,689,878,797.69/66,694.37
  6. Step 6: Final answer
    x = 70,318.96

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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.