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Finding the Fourth Proportional to 7,010,532.80, 10,520,464.80 and 3,977,892.80

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Solution

The fourth proportional to 7,010,532.80, 10,520,464.80 and 3,977,892.80 is: 5,969,486.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,010,532.80 : 10,520,464.80 = 3,977,892.80 : x
  2. Step 2: Convert to fraction form
    7,010,532.80/10,520,464.80 = 3,977,892.80/x
  3. Step 3: Cross multiply
    7,010,532.80x = 10,520,464.80 × 3,977,892.80
  4. Step 4: Simplify right side
    7,010,532.80x = 41,849,281,180,573.44
  5. Step 5: Solve for x
    x = 41,849,281,180,573.44/7,010,532.80
  6. Step 6: Final answer
    x = 5,969,486.54

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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.