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Finding the Fourth Proportional to 625,455.74, 862,672.79 and 396,050.37

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Solution

The fourth proportional to 625,455.74, 862,672.79 and 396,050.37 is: 546,260.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,455.74 : 862,672.79 = 396,050.37 : x
  2. Step 2: Convert to fraction form
    625,455.74/862,672.79 = 396,050.37/x
  3. Step 3: Cross multiply
    625,455.74x = 862,672.79 × 396,050.37
  4. Step 4: Simplify right side
    625,455.74x = 341,661,875,688.18
  5. Step 5: Solve for x
    x = 341,661,875,688.18/625,455.74
  6. Step 6: Final answer
    x = 546,260.68

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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.