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Finding the Fourth Proportional to 57,749,761.80, 86,624,642.70 and 57,351,630.60

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Solution

The fourth proportional to 57,749,761.80, 86,624,642.70 and 57,351,630.60 is: 86,027,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,749,761.80 : 86,624,642.70 = 57,351,630.60 : x
  2. Step 2: Convert to fraction form
    57,749,761.80/86,624,642.70 = 57,351,630.60/x
  3. Step 3: Cross multiply
    57,749,761.80x = 86,624,642.70 × 57,351,630.60
  4. Step 4: Simplify right side
    57,749,761.80x = 4,968,064,508,987,387
  5. Step 5: Solve for x
    x = 4,968,064,508,987,387/57,749,761.80
  6. Step 6: Final answer
    x = 86,027,445.90

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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.