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Finding the Fourth Proportional to 84,570,747.20, 118,143,954.40 and 84,570,747.20

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Solution

The fourth proportional to 84,570,747.20, 118,143,954.40 and 84,570,747.20 is: 118,143,954.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,570,747.20 : 118,143,954.40 = 84,570,747.20 : x
  2. Step 2: Convert to fraction form
    84,570,747.20/118,143,954.40 = 84,570,747.20/x
  3. Step 3: Cross multiply
    84,570,747.20x = 118,143,954.40 × 84,570,747.20
  4. Step 4: Simplify right side
    84,570,747.20x = 9,991,522,500,770,728
  5. Step 5: Solve for x
    x = 9,991,522,500,770,728/84,570,747.20
  6. Step 6: Final answer
    x = 118,143,954.40

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1.5x scale

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.