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Finding the Fourth Proportional to 617,904.20, 926,165.10 and 262,857.80

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Solution

The fourth proportional to 617,904.20, 926,165.10 and 262,857.80 is: 393,992.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,904.20 : 926,165.10 = 262,857.80 : x
  2. Step 2: Convert to fraction form
    617,904.20/926,165.10 = 262,857.80/x
  3. Step 3: Cross multiply
    617,904.20x = 926,165.10 × 262,857.80
  4. Step 4: Simplify right side
    617,904.20x = 243,449,720,622.78
  5. Step 5: Solve for x
    x = 243,449,720,622.78/617,904.20
  6. Step 6: Final answer
    x = 393,992.66

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1.5x scale

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.