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Finding the Fourth Proportional to 4,684,710.72, 7,027,765.20 and 1,489,941.12

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Solution

The fourth proportional to 4,684,710.72, 7,027,765.20 and 1,489,941.12 is: 2,235,134.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,684,710.72 : 7,027,765.20 = 1,489,941.12 : x
  2. Step 2: Convert to fraction form
    4,684,710.72/7,027,765.20 = 1,489,941.12/x
  3. Step 3: Cross multiply
    4,684,710.72x = 7,027,765.20 × 1,489,941.12
  4. Step 4: Simplify right side
    4,684,710.72x = 10,470,956,353,185.03
  5. Step 5: Solve for x
    x = 10,470,956,353,185.03/4,684,710.72
  6. Step 6: Final answer
    x = 2,235,134.03

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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.