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Finding the Fourth Proportional to 325,815,538.40, 488,723,307.60 and 325,815,538.40

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Solution

The fourth proportional to 325,815,538.40, 488,723,307.60 and 325,815,538.40 is: 488,723,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,815,538.40 : 488,723,307.60 = 325,815,538.40 : x
  2. Step 2: Convert to fraction form
    325,815,538.40/488,723,307.60 = 325,815,538.40/x
  3. Step 3: Cross multiply
    325,815,538.40x = 488,723,307.60 × 325,815,538.40
  4. Step 4: Simplify right side
    325,815,538.40x = 159,233,647,594,322,816
  5. Step 5: Solve for x
    x = 159,233,647,594,322,816/325,815,538.40
  6. Step 6: Final answer
    x = 488,723,307.60

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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.