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Finding the Fourth Proportional to 118,849.80, 164,017.28 and 67,870.84

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Solution

The fourth proportional to 118,849.80, 164,017.28 and 67,870.84 is: 93,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,849.80 : 164,017.28 = 67,870.84 : x
  2. Step 2: Convert to fraction form
    118,849.80/164,017.28 = 67,870.84/x
  3. Step 3: Cross multiply
    118,849.80x = 164,017.28 × 67,870.84
  4. Step 4: Simplify right side
    118,849.80x = 11,131,990,568.12
  5. Step 5: Solve for x
    x = 11,131,990,568.12/118,849.80
  6. Step 6: Final answer
    x = 93,664.36

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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.