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Finding the Fourth Proportional to 40,321,859.90, 60,482,789.86 and 40,321,859.90

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Solution

The fourth proportional to 40,321,859.90, 60,482,789.86 and 40,321,859.90 is: 60,482,789.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,321,859.90 : 60,482,789.86 = 40,321,859.90 : x
  2. Step 2: Convert to fraction form
    40,321,859.90/60,482,789.86 = 40,321,859.90/x
  3. Step 3: Cross multiply
    40,321,859.90x = 60,482,789.86 × 40,321,859.90
  4. Step 4: Simplify right side
    40,321,859.90x = 2,438,778,579,096,060.50
  5. Step 5: Solve for x
    x = 2,438,778,579,096,060.50/40,321,859.90
  6. Step 6: Final answer
    x = 60,482,789.86

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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.