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Finding the Fourth Proportional to 216,892.40, 325,079.40 and 111,657.20

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Solution

The fourth proportional to 216,892.40, 325,079.40 and 111,657.20 is: 167,352.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,892.40 : 325,079.40 = 111,657.20 : x
  2. Step 2: Convert to fraction form
    216,892.40/325,079.40 = 111,657.20/x
  3. Step 3: Cross multiply
    216,892.40x = 325,079.40 × 111,657.20
  4. Step 4: Simplify right side
    216,892.40x = 36,297,455,581.68
  5. Step 5: Solve for x
    x = 36,297,455,581.68/216,892.40
  6. Step 6: Final answer
    x = 167,352.36

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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.