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Finding the Fourth Proportional to 111,628.40, 167,831.40 and 94,521.20

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Solution

The fourth proportional to 111,628.40, 167,831.40 and 94,521.20 is: 142,111.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,628.40 : 167,831.40 = 94,521.20 : x
  2. Step 2: Convert to fraction form
    111,628.40/167,831.40 = 94,521.20/x
  3. Step 3: Cross multiply
    111,628.40x = 167,831.40 × 94,521.20
  4. Step 4: Simplify right side
    111,628.40x = 15,863,625,325.68
  5. Step 5: Solve for x
    x = 15,863,625,325.68/111,628.40
  6. Step 6: Final answer
    x = 142,111.02

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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.