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Finding the Fourth Proportional to 18,936,801.60, 28,405,202.40 and 11,756,443.20

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Solution

The fourth proportional to 18,936,801.60, 28,405,202.40 and 11,756,443.20 is: 17,634,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936,801.60 : 28,405,202.40 = 11,756,443.20 : x
  2. Step 2: Convert to fraction form
    18,936,801.60/28,405,202.40 = 11,756,443.20/x
  3. Step 3: Cross multiply
    18,936,801.60x = 28,405,202.40 × 11,756,443.20
  4. Step 4: Simplify right side
    18,936,801.60x = 333,944,148,600,103.62
  5. Step 5: Solve for x
    x = 333,944,148,600,103.62/18,936,801.60
  6. Step 6: Final answer
    x = 17,634,664.80

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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.