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Finding the Fourth Proportional to 76,041,863.60, 113,978,814.60 and 41,987,649.20

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Solution

The fourth proportional to 76,041,863.60, 113,978,814.60 and 41,987,649.20 is: 62,935,102.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,041,863.60 : 113,978,814.60 = 41,987,649.20 : x
  2. Step 2: Convert to fraction form
    76,041,863.60/113,978,814.60 = 41,987,649.20/x
  3. Step 3: Cross multiply
    76,041,863.60x = 113,978,814.60 × 41,987,649.20
  4. Step 4: Simplify right side
    76,041,863.60x = 4,785,702,483,656,638
  5. Step 5: Solve for x
    x = 4,785,702,483,656,638/76,041,863.60
  6. Step 6: Final answer
    x = 62,935,102.55

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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.