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Finding the Fourth Proportional to 5,212,793.64, 7,819,540.42 and 1,426,309.32

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Solution

The fourth proportional to 5,212,793.64, 7,819,540.42 and 1,426,309.32 is: 2,139,559.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212,793.64 : 7,819,540.42 = 1,426,309.32 : x
  2. Step 2: Convert to fraction form
    5,212,793.64/7,819,540.42 = 1,426,309.32/x
  3. Step 3: Cross multiply
    5,212,793.64x = 7,819,540.42 × 1,426,309.32
  4. Step 4: Simplify right side
    5,212,793.64x = 11,153,083,379,162.71
  5. Step 5: Solve for x
    x = 11,153,083,379,162.71/5,212,793.64
  6. Step 6: Final answer
    x = 2,139,559.74

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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.