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Finding the Fourth Proportional to 68,897.43, 103,259.88 and 29,408.31

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Solution

The fourth proportional to 68,897.43, 103,259.88 and 29,408.31 is: 44,075.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,897.43 : 103,259.88 = 29,408.31 : x
  2. Step 2: Convert to fraction form
    68,897.43/103,259.88 = 29,408.31/x
  3. Step 3: Cross multiply
    68,897.43x = 103,259.88 × 29,408.31
  4. Step 4: Simplify right side
    68,897.43x = 3,036,698,561.60
  5. Step 5: Solve for x
    x = 3,036,698,561.60/68,897.43
  6. Step 6: Final answer
    x = 44,075.64

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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.