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Finding the Fourth Proportional to 76,295,999.60, 114,443,999.40 and 67,981,900.40

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Solution

The fourth proportional to 76,295,999.60, 114,443,999.40 and 67,981,900.40 is: 101,972,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,295,999.60 : 114,443,999.40 = 67,981,900.40 : x
  2. Step 2: Convert to fraction form
    76,295,999.60/114,443,999.40 = 67,981,900.40/x
  3. Step 3: Cross multiply
    76,295,999.60x = 114,443,999.40 × 67,981,900.40
  4. Step 4: Simplify right side
    76,295,999.60x = 7,780,120,568,588,461
  5. Step 5: Solve for x
    x = 7,780,120,568,588,461/76,295,999.60
  6. Step 6: Final answer
    x = 101,972,850.60

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1.5x scale

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.