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Finding the Fourth Proportional to 57,985,884.60, 86,978,826.90 and 25,621,127.70

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Solution

The fourth proportional to 57,985,884.60, 86,978,826.90 and 25,621,127.70 is: 38,431,691.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,985,884.60 : 86,978,826.90 = 25,621,127.70 : x
  2. Step 2: Convert to fraction form
    57,985,884.60/86,978,826.90 = 25,621,127.70/x
  3. Step 3: Cross multiply
    57,985,884.60x = 86,978,826.90 × 25,621,127.70
  4. Step 4: Simplify right side
    57,985,884.60x = 2,228,495,631,201,095.25
  5. Step 5: Solve for x
    x = 2,228,495,631,201,095.25/57,985,884.60
  6. Step 6: Final answer
    x = 38,431,691.55

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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.