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Finding the Fourth Proportional to 63,680.96, 87,880.72 and 35,389.28

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Solution

The fourth proportional to 63,680.96, 87,880.72 and 35,389.28 is: 48,837.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,680.96 : 87,880.72 = 35,389.28 : x
  2. Step 2: Convert to fraction form
    63,680.96/87,880.72 = 35,389.28/x
  3. Step 3: Cross multiply
    63,680.96x = 87,880.72 × 35,389.28
  4. Step 4: Simplify right side
    63,680.96x = 3,110,035,406.68
  5. Step 5: Solve for x
    x = 3,110,035,406.68/63,680.96
  6. Step 6: Final answer
    x = 48,837.76

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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.