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Finding the Fourth Proportional to 108,831.48, 163,185.96 and 37,720.80

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Solution

The fourth proportional to 108,831.48, 163,185.96 and 37,720.80 is: 56,559.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,831.48 : 163,185.96 = 37,720.80 : x
  2. Step 2: Convert to fraction form
    108,831.48/163,185.96 = 37,720.80/x
  3. Step 3: Cross multiply
    108,831.48x = 163,185.96 × 37,720.80
  4. Step 4: Simplify right side
    108,831.48x = 6,155,504,959.97
  5. Step 5: Solve for x
    x = 6,155,504,959.97/108,831.48
  6. Step 6: Final answer
    x = 56,559.97

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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.