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Finding the Fourth Proportional to 65,707.80, 98,568.90 and 63,634.20

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Solution

The fourth proportional to 65,707.80, 98,568.90 and 63,634.20 is: 95,458.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,707.80 : 98,568.90 = 63,634.20 : x
  2. Step 2: Convert to fraction form
    65,707.80/98,568.90 = 63,634.20/x
  3. Step 3: Cross multiply
    65,707.80x = 98,568.90 × 63,634.20
  4. Step 4: Simplify right side
    65,707.80x = 6,272,353,096.38
  5. Step 5: Solve for x
    x = 6,272,353,096.38/65,707.80
  6. Step 6: Final answer
    x = 95,458.27

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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.