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Finding the Fourth Proportional to 18,451,969.20, 27,677,953.80 and 7,092,788.40

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Solution

The fourth proportional to 18,451,969.20, 27,677,953.80 and 7,092,788.40 is: 10,639,182.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,451,969.20 : 27,677,953.80 = 7,092,788.40 : x
  2. Step 2: Convert to fraction form
    18,451,969.20/27,677,953.80 = 7,092,788.40/x
  3. Step 3: Cross multiply
    18,451,969.20x = 27,677,953.80 × 7,092,788.40
  4. Step 4: Simplify right side
    18,451,969.20x = 196,313,869,648,375.94
  5. Step 5: Solve for x
    x = 196,313,869,648,375.94/18,451,969.20
  6. Step 6: Final answer
    x = 10,639,182.60

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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.