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Finding the Fourth Proportional to 8,652,534.30, 12,978,801.45 and 3,603,188.70

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Solution

The fourth proportional to 8,652,534.30, 12,978,801.45 and 3,603,188.70 is: 5,404,783.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,652,534.30 : 12,978,801.45 = 3,603,188.70 : x
  2. Step 2: Convert to fraction form
    8,652,534.30/12,978,801.45 = 3,603,188.70/x
  3. Step 3: Cross multiply
    8,652,534.30x = 12,978,801.45 × 3,603,188.70
  4. Step 4: Simplify right side
    8,652,534.30x = 46,765,070,724,183.62
  5. Step 5: Solve for x
    x = 46,765,070,724,183.62/8,652,534.30
  6. Step 6: Final answer
    x = 5,404,783.05

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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.