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Finding the Fourth Proportional to 52,406.40, 78,494.40 and 51,254.40

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Solution

The fourth proportional to 52,406.40, 78,494.40 and 51,254.40 is: 76,768.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,406.40 : 78,494.40 = 51,254.40 : x
  2. Step 2: Convert to fraction form
    52,406.40/78,494.40 = 51,254.40/x
  3. Step 3: Cross multiply
    52,406.40x = 78,494.40 × 51,254.40
  4. Step 4: Simplify right side
    52,406.40x = 4,023,183,375.36
  5. Step 5: Solve for x
    x = 4,023,183,375.36/52,406.40
  6. Step 6: Final answer
    x = 76,768.93

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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.