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Finding the Fourth Proportional to 617,911.80, 926,867.70 and 262,937.40

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Solution

The fourth proportional to 617,911.80, 926,867.70 and 262,937.40 is: 394,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,911.80 : 926,867.70 = 262,937.40 : x
  2. Step 2: Convert to fraction form
    617,911.80/926,867.70 = 262,937.40/x
  3. Step 3: Cross multiply
    617,911.80x = 926,867.70 × 262,937.40
  4. Step 4: Simplify right side
    617,911.80x = 243,708,183,181.98
  5. Step 5: Solve for x
    x = 243,708,183,181.98/617,911.80
  6. Step 6: Final answer
    x = 394,406.10

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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.