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Finding the Fourth Proportional to 57,773,730.56, 79,728,711.72 and 31,312,929.20

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Solution

The fourth proportional to 57,773,730.56, 79,728,711.72 and 31,312,929.20 is: 43,212,364.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,773,730.56 : 79,728,711.72 = 31,312,929.20 : x
  2. Step 2: Convert to fraction form
    57,773,730.56/79,728,711.72 = 31,312,929.20/x
  3. Step 3: Cross multiply
    57,773,730.56x = 79,728,711.72 × 31,312,929.20
  4. Step 4: Simplify right side
    57,773,730.56x = 2,496,539,505,295,570
  5. Step 5: Solve for x
    x = 2,496,539,505,295,570/57,773,730.56
  6. Step 6: Final answer
    x = 43,212,364.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.