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Finding the Fourth Proportional to 63,485.76, 87,612.48 and 35,189.76

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Solution

The fourth proportional to 63,485.76, 87,612.48 and 35,189.76 is: 48,563.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,485.76 : 87,612.48 = 35,189.76 : x
  2. Step 2: Convert to fraction form
    63,485.76/87,612.48 = 35,189.76/x
  3. Step 3: Cross multiply
    63,485.76x = 87,612.48 × 35,189.76
  4. Step 4: Simplify right side
    63,485.76x = 3,083,062,144.20
  5. Step 5: Solve for x
    x = 3,083,062,144.20/63,485.76
  6. Step 6: Final answer
    x = 48,563.05

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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.