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Finding the Fourth Proportional to 201,062,417.20, 301,629,055.20 and 71,745,107.20

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Solution

The fourth proportional to 201,062,417.20, 301,629,055.20 and 71,745,107.20 is: 107,630,303.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,062,417.20 : 301,629,055.20 = 71,745,107.20 : x
  2. Step 2: Convert to fraction form
    201,062,417.20/301,629,055.20 = 71,745,107.20/x
  3. Step 3: Cross multiply
    201,062,417.20x = 301,629,055.20 × 71,745,107.20
  4. Step 4: Simplify right side
    201,062,417.20x = 21,640,408,899,958,716
  5. Step 5: Solve for x
    x = 21,640,408,899,958,716/201,062,417.20
  6. Step 6: Final answer
    x = 107,630,303.07

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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.