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Finding the Fourth Proportional to 55,196,358.60, 82,794,537.90 and 18,845,794.20

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Solution

The fourth proportional to 55,196,358.60, 82,794,537.90 and 18,845,794.20 is: 28,268,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,196,358.60 : 82,794,537.90 = 18,845,794.20 : x
  2. Step 2: Convert to fraction form
    55,196,358.60/82,794,537.90 = 18,845,794.20/x
  3. Step 3: Cross multiply
    55,196,358.60x = 82,794,537.90 × 18,845,794.20
  4. Step 4: Simplify right side
    55,196,358.60x = 1,560,328,822,147,500.25
  5. Step 5: Solve for x
    x = 1,560,328,822,147,500.25/55,196,358.60
  6. Step 6: Final answer
    x = 28,268,691.30

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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.