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Finding the Fourth Proportional to 38,972,954.20, 54,651,715.40 and 38,972,954.20

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Solution

The fourth proportional to 38,972,954.20, 54,651,715.40 and 38,972,954.20 is: 54,651,715.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,972,954.20 : 54,651,715.40 = 38,972,954.20 : x
  2. Step 2: Convert to fraction form
    38,972,954.20/54,651,715.40 = 38,972,954.20/x
  3. Step 3: Cross multiply
    38,972,954.20x = 54,651,715.40 × 38,972,954.20
  4. Step 4: Simplify right side
    38,972,954.20x = 2,129,938,801,235,634.75
  5. Step 5: Solve for x
    x = 2,129,938,801,235,634.75/38,972,954.20
  6. Step 6: Final answer
    x = 54,651,715.40

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Double scale
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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.