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Finding the Fourth Proportional to 76,614,709.60, 114,978,051.60 and 53,939,893.60

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Solution

The fourth proportional to 76,614,709.60, 114,978,051.60 and 53,939,893.60 is: 80,949,257.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,614,709.60 : 114,978,051.60 = 53,939,893.60 : x
  2. Step 2: Convert to fraction form
    76,614,709.60/114,978,051.60 = 53,939,893.60/x
  3. Step 3: Cross multiply
    76,614,709.60x = 114,978,051.60 × 53,939,893.60
  4. Step 4: Simplify right side
    76,614,709.60x = 6,201,903,869,639,310
  5. Step 5: Solve for x
    x = 6,201,903,869,639,310/76,614,709.60
  6. Step 6: Final answer
    x = 80,949,257.68

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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.