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Finding the Fourth Proportional to 18,865,230.40, 28,232,527.20 and 11,297,627.20

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Solution

The fourth proportional to 18,865,230.40, 28,232,527.20 and 11,297,627.20 is: 16,907,324.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865,230.40 : 28,232,527.20 = 11,297,627.20 : x
  2. Step 2: Convert to fraction form
    18,865,230.40/28,232,527.20 = 11,297,627.20/x
  3. Step 3: Cross multiply
    18,865,230.40x = 28,232,527.20 × 11,297,627.20
  4. Step 4: Simplify right side
    18,865,230.40x = 318,960,567,219,459.81
  5. Step 5: Solve for x
    x = 318,960,567,219,459.81/18,865,230.40
  6. Step 6: Final answer
    x = 16,907,324.24

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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.