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Finding the Fourth Proportional to 84,570,745.20, 118,143,951.60 and 84,570,745.20

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Solution

The fourth proportional to 84,570,745.20, 118,143,951.60 and 84,570,745.20 is: 118,143,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,570,745.20 : 118,143,951.60 = 84,570,745.20 : x
  2. Step 2: Convert to fraction form
    84,570,745.20/118,143,951.60 = 84,570,745.20/x
  3. Step 3: Cross multiply
    84,570,745.20x = 118,143,951.60 × 84,570,745.20
  4. Step 4: Simplify right side
    84,570,745.20x = 9,991,522,027,684,732
  5. Step 5: Solve for x
    x = 9,991,522,027,684,732/84,570,745.20
  6. Step 6: Final answer
    x = 118,143,951.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.