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Finding the Fourth Proportional to 5,118,585.72, 7,662,978.44 and 2,683,965.73

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Solution

The fourth proportional to 5,118,585.72, 7,662,978.44 and 2,683,965.73 is: 4,018,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118,585.72 : 7,662,978.44 = 2,683,965.73 : x
  2. Step 2: Convert to fraction form
    5,118,585.72/7,662,978.44 = 2,683,965.73/x
  3. Step 3: Cross multiply
    5,118,585.72x = 7,662,978.44 × 2,683,965.73
  4. Step 4: Simplify right side
    5,118,585.72x = 20,567,171,522,688.86
  5. Step 5: Solve for x
    x = 20,567,171,522,688.86/5,118,585.72
  6. Step 6: Final answer
    x = 4,018,135.60

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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.