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Finding the Fourth Proportional to 18,794,662.80, 28,191,994.20 and 11,236,390.80

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Solution

The fourth proportional to 18,794,662.80, 28,191,994.20 and 11,236,390.80 is: 16,854,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794,662.80 : 28,191,994.20 = 11,236,390.80 : x
  2. Step 2: Convert to fraction form
    18,794,662.80/28,191,994.20 = 11,236,390.80/x
  3. Step 3: Cross multiply
    18,794,662.80x = 28,191,994.20 × 11,236,390.80
  4. Step 4: Simplify right side
    18,794,662.80x = 316,776,264,262,533.38
  5. Step 5: Solve for x
    x = 316,776,264,262,533.38/18,794,662.80
  6. Step 6: Final answer
    x = 16,854,586.20

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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.