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Finding the Fourth Proportional to 59,978.85, 89,968.40 and 15,605.54

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Solution

The fourth proportional to 59,978.85, 89,968.40 and 15,605.54 is: 23,408.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,978.85 : 89,968.40 = 15,605.54 : x
  2. Step 2: Convert to fraction form
    59,978.85/89,968.40 = 15,605.54/x
  3. Step 3: Cross multiply
    59,978.85x = 89,968.40 × 15,605.54
  4. Step 4: Simplify right side
    59,978.85x = 1,404,004,937.07
  5. Step 5: Solve for x
    x = 1,404,004,937.07/59,978.85
  6. Step 6: Final answer
    x = 23,408.33

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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.