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Finding the Fourth Proportional to 8,735,584.60, 13,103,765.70 and 2,978,234.20

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Solution

The fourth proportional to 8,735,584.60, 13,103,765.70 and 2,978,234.20 is: 4,467,483.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,735,584.60 : 13,103,765.70 = 2,978,234.20 : x
  2. Step 2: Convert to fraction form
    8,735,584.60/13,103,765.70 = 2,978,234.20/x
  3. Step 3: Cross multiply
    8,735,584.60x = 13,103,765.70 × 2,978,234.20
  4. Step 4: Simplify right side
    8,735,584.60x = 39,026,083,156,526.94
  5. Step 5: Solve for x
    x = 39,026,083,156,526.94/8,735,584.60
  6. Step 6: Final answer
    x = 4,467,483.85

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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.