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Finding the Fourth Proportional to 111,609.40, 167,543.70 and 110,831.80

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Solution

The fourth proportional to 111,609.40, 167,543.70 and 110,831.80 is: 166,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,609.40 : 167,543.70 = 110,831.80 : x
  2. Step 2: Convert to fraction form
    111,609.40/167,543.70 = 110,831.80/x
  3. Step 3: Cross multiply
    111,609.40x = 167,543.70 × 110,831.80
  4. Step 4: Simplify right side
    111,609.40x = 18,569,169,849.66
  5. Step 5: Solve for x
    x = 18,569,169,849.66/111,609.40
  6. Step 6: Final answer
    x = 166,376.40

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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.