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Finding the Fourth Proportional to 645,757.56, 968,626.62 and 290,520.72

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Solution

The fourth proportional to 645,757.56, 968,626.62 and 290,520.72 is: 435,776.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,757.56 : 968,626.62 = 290,520.72 : x
  2. Step 2: Convert to fraction form
    645,757.56/968,626.62 = 290,520.72/x
  3. Step 3: Cross multiply
    645,757.56x = 968,626.62 × 290,520.72
  4. Step 4: Simplify right side
    645,757.56x = 281,406,103,053.57
  5. Step 5: Solve for x
    x = 281,406,103,053.57/645,757.56
  6. Step 6: Final answer
    x = 435,776.71

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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.