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Finding the Fourth Proportional to 216,964.80, 325,447.20 and 164,476.80

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Solution

The fourth proportional to 216,964.80, 325,447.20 and 164,476.80 is: 246,715.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,964.80 : 325,447.20 = 164,476.80 : x
  2. Step 2: Convert to fraction form
    216,964.80/325,447.20 = 164,476.80/x
  3. Step 3: Cross multiply
    216,964.80x = 325,447.20 × 164,476.80
  4. Step 4: Simplify right side
    216,964.80x = 53,528,514,024.96
  5. Step 5: Solve for x
    x = 53,528,514,024.96/216,964.80
  6. Step 6: Final answer
    x = 246,715.20

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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.