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Finding the Fourth Proportional to 625,453.86, 862,670.21 and 396,048.50

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Solution

The fourth proportional to 625,453.86, 862,670.21 and 396,048.50 is: 546,258.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,453.86 : 862,670.21 = 396,048.50 : x
  2. Step 2: Convert to fraction form
    625,453.86/862,670.21 = 396,048.50/x
  3. Step 3: Cross multiply
    625,453.86x = 862,670.21 × 396,048.50
  4. Step 4: Simplify right side
    625,453.86x = 341,659,236,371.59
  5. Step 5: Solve for x
    x = 341,659,236,371.59/625,453.86
  6. Step 6: Final answer
    x = 546,258.10

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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.