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Finding the Fourth Proportional to 118,833.32, 163,986.18 and 68,539.88

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Solution

The fourth proportional to 118,833.32, 163,986.18 and 68,539.88 is: 94,582.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,833.32 : 163,986.18 = 68,539.88 : x
  2. Step 2: Convert to fraction form
    118,833.32/163,986.18 = 68,539.88/x
  3. Step 3: Cross multiply
    118,833.32x = 163,986.18 × 68,539.88
  4. Step 4: Simplify right side
    118,833.32x = 11,239,593,098.86
  5. Step 5: Solve for x
    x = 11,239,593,098.86/118,833.32
  6. Step 6: Final answer
    x = 94,582.84

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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.