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Finding the Fourth Proportional to 109,998.80, 164,998.20 and 54,702.80

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Solution

The fourth proportional to 109,998.80, 164,998.20 and 54,702.80 is: 82,054.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,998.80 : 164,998.20 = 54,702.80 : x
  2. Step 2: Convert to fraction form
    109,998.80/164,998.20 = 54,702.80/x
  3. Step 3: Cross multiply
    109,998.80x = 164,998.20 × 54,702.80
  4. Step 4: Simplify right side
    109,998.80x = 9,025,863,534.96
  5. Step 5: Solve for x
    x = 9,025,863,534.96/109,998.80
  6. Step 6: Final answer
    x = 82,054.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.