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Finding the Fourth Proportional to 66,333.70, 91,384.81 and 46,155.88

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Solution

The fourth proportional to 66,333.70, 91,384.81 and 46,155.88 is: 63,586.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,333.70 : 91,384.81 = 46,155.88 : x
  2. Step 2: Convert to fraction form
    66,333.70/91,384.81 = 46,155.88/x
  3. Step 3: Cross multiply
    66,333.70x = 91,384.81 × 46,155.88
  4. Step 4: Simplify right side
    66,333.70x = 4,217,946,324.18
  5. Step 5: Solve for x
    x = 4,217,946,324.18/66,333.70
  6. Step 6: Final answer
    x = 63,586.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.