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Finding the Fourth Proportional to 411,836.32, 617,760.56 and 162,516

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Solution

The fourth proportional to 411,836.32, 617,760.56 and 162,516 is: 243,776.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,836.32 : 617,760.56 = 162,516 : x
  2. Step 2: Convert to fraction form
    411,836.32/617,760.56 = 162,516/x
  3. Step 3: Cross multiply
    411,836.32x = 617,760.56 × 162,516
  4. Step 4: Simplify right side
    411,836.32x = 100,395,975,168.96
  5. Step 5: Solve for x
    x = 100,395,975,168.96/411,836.32
  6. Step 6: Final answer
    x = 243,776.40

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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.