Home / 18,711,212.80-28,066,819.20-12,664,595.20

Finding the Fourth Proportional to 18,711,212.80, 28,066,819.20 and 12,664,595.20

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Solution

The fourth proportional to 18,711,212.80, 28,066,819.20 and 12,664,595.20 is: 18,996,892.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711,212.80 : 28,066,819.20 = 12,664,595.20 : x
  2. Step 2: Convert to fraction form
    18,711,212.80/28,066,819.20 = 12,664,595.20/x
  3. Step 3: Cross multiply
    18,711,212.80x = 28,066,819.20 × 12,664,595.20
  4. Step 4: Simplify right side
    18,711,212.80x = 355,454,903,719,587.81
  5. Step 5: Solve for x
    x = 355,454,903,719,587.81/18,711,212.80
  6. Step 6: Final answer
    x = 18,996,892.80

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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.