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Finding the Fourth Proportional to 118,718.37, 163,846.98 and 67,719.42

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Solution

The fourth proportional to 118,718.37, 163,846.98 and 67,719.42 is: 93,461.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,718.37 : 163,846.98 = 67,719.42 : x
  2. Step 2: Convert to fraction form
    118,718.37/163,846.98 = 67,719.42/x
  3. Step 3: Cross multiply
    118,718.37x = 163,846.98 × 67,719.42
  4. Step 4: Simplify right side
    118,718.37x = 11,095,622,454.35
  5. Step 5: Solve for x
    x = 11,095,622,454.35/118,718.37
  6. Step 6: Final answer
    x = 93,461.71

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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.