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Finding the Fourth Proportional to 625,545.72, 863,749.98 and 577,781.64

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Solution

The fourth proportional to 625,545.72, 863,749.98 and 577,781.64 is: 797,797.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,545.72 : 863,749.98 = 577,781.64 : x
  2. Step 2: Convert to fraction form
    625,545.72/863,749.98 = 577,781.64/x
  3. Step 3: Cross multiply
    625,545.72x = 863,749.98 × 577,781.64
  4. Step 4: Simplify right side
    625,545.72x = 499,058,879,994.37
  5. Step 5: Solve for x
    x = 499,058,879,994.37/625,545.72
  6. Step 6: Final answer
    x = 797,797.61

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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.