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Finding the Fourth Proportional to 5,324,723.60, 7,978,957.98 and 3,161,488.86

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Solution

The fourth proportional to 5,324,723.60, 7,978,957.98 and 3,161,488.86 is: 4,737,407.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,324,723.60 : 7,978,957.98 = 3,161,488.86 : x
  2. Step 2: Convert to fraction form
    5,324,723.60/7,978,957.98 = 3,161,488.86/x
  3. Step 3: Cross multiply
    5,324,723.60x = 7,978,957.98 × 3,161,488.86
  4. Step 4: Simplify right side
    5,324,723.60x = 25,225,386,768,178.10
  5. Step 5: Solve for x
    x = 25,225,386,768,178.10/5,324,723.60
  6. Step 6: Final answer
    x = 4,737,407.73

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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.