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Finding the Fourth Proportional to 109,992.40, 165,009.12 and 50,788.96

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Solution

The fourth proportional to 109,992.40, 165,009.12 and 50,788.96 is: 76,192.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,992.40 : 165,009.12 = 50,788.96 : x
  2. Step 2: Convert to fraction form
    109,992.40/165,009.12 = 50,788.96/x
  3. Step 3: Cross multiply
    109,992.40x = 165,009.12 × 50,788.96
  4. Step 4: Simplify right side
    109,992.40x = 8,380,641,595.32
  5. Step 5: Solve for x
    x = 8,380,641,595.32/109,992.40
  6. Step 6: Final answer
    x = 76,192.92

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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.