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Finding the Fourth Proportional to 65,503.89, 98,255.43 and 18,756.77

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Solution

The fourth proportional to 65,503.89, 98,255.43 and 18,756.77 is: 28,135.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,503.89 : 98,255.43 = 18,756.77 : x
  2. Step 2: Convert to fraction form
    65,503.89/98,255.43 = 18,756.77/x
  3. Step 3: Cross multiply
    65,503.89x = 98,255.43 × 18,756.77
  4. Step 4: Simplify right side
    65,503.89x = 1,842,954,010.48
  5. Step 5: Solve for x
    x = 1,842,954,010.48/65,503.89
  6. Step 6: Final answer
    x = 28,135.03

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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.