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Finding the Fourth Proportional to 625,536.78, 863,231.38 and 353,595.12

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Solution

The fourth proportional to 625,536.78, 863,231.38 and 353,595.12 is: 487,955.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,536.78 : 863,231.38 = 353,595.12 : x
  2. Step 2: Convert to fraction form
    625,536.78/863,231.38 = 353,595.12/x
  3. Step 3: Cross multiply
    625,536.78x = 863,231.38 × 353,595.12
  4. Step 4: Simplify right side
    625,536.78x = 305,234,403,398.87
  5. Step 5: Solve for x
    x = 305,234,403,398.87/625,536.78
  6. Step 6: Final answer
    x = 487,955.97

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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.