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Finding the Fourth Proportional to 63,028.98, 86,978.88 and 34,348.90

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Solution

The fourth proportional to 63,028.98, 86,978.88 and 34,348.90 is: 47,400.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,028.98 : 86,978.88 = 34,348.90 : x
  2. Step 2: Convert to fraction form
    63,028.98/86,978.88 = 34,348.90/x
  3. Step 3: Cross multiply
    63,028.98x = 86,978.88 × 34,348.90
  4. Step 4: Simplify right side
    63,028.98x = 2,987,628,851.23
  5. Step 5: Solve for x
    x = 2,987,628,851.23/63,028.98
  6. Step 6: Final answer
    x = 47,400.88

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Why These Related Problems?

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