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Finding the Fourth Proportional to 65,096.80, 97,645.20 and 38,831.20

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Solution

The fourth proportional to 65,096.80, 97,645.20 and 38,831.20 is: 58,246.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,096.80 : 97,645.20 = 38,831.20 : x
  2. Step 2: Convert to fraction form
    65,096.80/97,645.20 = 38,831.20/x
  3. Step 3: Cross multiply
    65,096.80x = 97,645.20 × 38,831.20
  4. Step 4: Simplify right side
    65,096.80x = 3,791,680,290.24
  5. Step 5: Solve for x
    x = 3,791,680,290.24/65,096.80
  6. Step 6: Final answer
    x = 58,246.80

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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.