Home / 18,900,609.60-28,364,911.20-12,508,737.60

Finding the Fourth Proportional to 18,900,609.60, 28,364,911.20 and 12,508,737.60

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Solution

The fourth proportional to 18,900,609.60, 28,364,911.20 and 12,508,737.60 is: 18,772,369.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900,609.60 : 28,364,911.20 = 12,508,737.60 : x
  2. Step 2: Convert to fraction form
    18,900,609.60/28,364,911.20 = 12,508,737.60/x
  3. Step 3: Cross multiply
    18,900,609.60x = 28,364,911.20 × 12,508,737.60
  4. Step 4: Simplify right side
    18,900,609.60x = 354,809,231,248,101.12
  5. Step 5: Solve for x
    x = 354,809,231,248,101.12/18,900,609.60
  6. Step 6: Final answer
    x = 18,772,369.71

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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.