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Finding the Fourth Proportional to 617,911.40, 926,867.10 and 285,487.40

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Solution

The fourth proportional to 617,911.40, 926,867.10 and 285,487.40 is: 428,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,911.40 : 926,867.10 = 285,487.40 : x
  2. Step 2: Convert to fraction form
    617,911.40/926,867.10 = 285,487.40/x
  3. Step 3: Cross multiply
    617,911.40x = 926,867.10 × 285,487.40
  4. Step 4: Simplify right side
    617,911.40x = 264,608,878,524.54
  5. Step 5: Solve for x
    x = 264,608,878,524.54/617,911.40
  6. Step 6: Final answer
    x = 428,231.10

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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.