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Finding the Fourth Proportional to 216,607.36, 324,714.19 and 98,214.11

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Solution

The fourth proportional to 216,607.36, 324,714.19 and 98,214.11 is: 147,231.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,607.36 : 324,714.19 = 98,214.11 : x
  2. Step 2: Convert to fraction form
    216,607.36/324,714.19 = 98,214.11/x
  3. Step 3: Cross multiply
    216,607.36x = 324,714.19 × 98,214.11
  4. Step 4: Simplify right side
    216,607.36x = 31,891,515,175.22
  5. Step 5: Solve for x
    x = 31,891,515,175.22/216,607.36
  6. Step 6: Final answer
    x = 147,231.91

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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.