Home / 18,711,213.80-28,066,820.70-12,664,596.20

Finding the Fourth Proportional to 18,711,213.80, 28,066,820.70 and 12,664,596.20

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Solution

The fourth proportional to 18,711,213.80, 28,066,820.70 and 12,664,596.20 is: 18,996,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711,213.80 : 28,066,820.70 = 12,664,596.20 : x
  2. Step 2: Convert to fraction form
    18,711,213.80/28,066,820.70 = 12,664,596.20/x
  3. Step 3: Cross multiply
    18,711,213.80x = 28,066,820.70 × 12,664,596.20
  4. Step 4: Simplify right side
    18,711,213.80x = 355,454,950,783,301.31
  5. Step 5: Solve for x
    x = 355,454,950,783,301.31/18,711,213.80
  6. Step 6: Final answer
    x = 18,996,894.30

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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.