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Finding the Fourth Proportional to 216,685.20, 299,107.56 and 193,983.12

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Solution

The fourth proportional to 216,685.20, 299,107.56 and 193,983.12 is: 267,770.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,685.20 : 299,107.56 = 193,983.12 : x
  2. Step 2: Convert to fraction form
    216,685.20/299,107.56 = 193,983.12/x
  3. Step 3: Cross multiply
    216,685.20x = 299,107.56 × 193,983.12
  4. Step 4: Simplify right side
    216,685.20x = 58,021,817,704.39
  5. Step 5: Solve for x
    x = 58,021,817,704.39/216,685.20
  6. Step 6: Final answer
    x = 267,770.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.