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Finding the Fourth Proportional to 625,459.83, 863,137.53 and 338,979.84

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Solution

The fourth proportional to 625,459.83, 863,137.53 and 338,979.84 is: 467,793.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,459.83 : 863,137.53 = 338,979.84 : x
  2. Step 2: Convert to fraction form
    625,459.83/863,137.53 = 338,979.84/x
  3. Step 3: Cross multiply
    625,459.83x = 863,137.53 × 338,979.84
  4. Step 4: Simplify right side
    625,459.83x = 292,586,221,817.40
  5. Step 5: Solve for x
    x = 292,586,221,817.40/625,459.83
  6. Step 6: Final answer
    x = 467,793.79

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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.