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Finding the Fourth Proportional to 109,911.60, 164,867.40 and 54,500.40

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Solution

The fourth proportional to 109,911.60, 164,867.40 and 54,500.40 is: 81,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,911.60 : 164,867.40 = 54,500.40 : x
  2. Step 2: Convert to fraction form
    109,911.60/164,867.40 = 54,500.40/x
  3. Step 3: Cross multiply
    109,911.60x = 164,867.40 × 54,500.40
  4. Step 4: Simplify right side
    109,911.60x = 8,985,339,246.96
  5. Step 5: Solve for x
    x = 8,985,339,246.96/109,911.60
  6. Step 6: Final answer
    x = 81,750.60

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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.