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Finding the Fourth Proportional to 118,698.92, 163,808.93 and 67,719.95

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Solution

The fourth proportional to 118,698.92, 163,808.93 and 67,719.95 is: 93,456.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,698.92 : 163,808.93 = 67,719.95 : x
  2. Step 2: Convert to fraction form
    118,698.92/163,808.93 = 67,719.95/x
  3. Step 3: Cross multiply
    118,698.92x = 163,808.93 × 67,719.95
  4. Step 4: Simplify right side
    118,698.92x = 11,093,132,513.69
  5. Step 5: Solve for x
    x = 11,093,132,513.69/118,698.92
  6. Step 6: Final answer
    x = 93,456.05

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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.