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Finding the Fourth Proportional to 68,140.72, 93,953.73 and 46,640.83

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Solution

The fourth proportional to 68,140.72, 93,953.73 and 46,640.83 is: 64,309.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,140.72 : 93,953.73 = 46,640.83 : x
  2. Step 2: Convert to fraction form
    68,140.72/93,953.73 = 46,640.83/x
  3. Step 3: Cross multiply
    68,140.72x = 93,953.73 × 46,640.83
  4. Step 4: Simplify right side
    68,140.72x = 4,382,079,948.80
  5. Step 5: Solve for x
    x = 4,382,079,948.80/68,140.72
  6. Step 6: Final answer
    x = 64,309.27

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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.