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Finding the Fourth Proportional to 425,380.32, 586,667.34 and 255,581.64

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Solution

The fourth proportional to 425,380.32, 586,667.34 and 255,581.64 is: 352,487.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,380.32 : 586,667.34 = 255,581.64 : x
  2. Step 2: Convert to fraction form
    425,380.32/586,667.34 = 255,581.64/x
  3. Step 3: Cross multiply
    425,380.32x = 586,667.34 × 255,581.64
  4. Step 4: Simplify right side
    425,380.32x = 149,941,400,891.64
  5. Step 5: Solve for x
    x = 149,941,400,891.64/425,380.32
  6. Step 6: Final answer
    x = 352,487.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.