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Finding the Fourth Proportional to 625,254.96, 862,840.50 and 353,317.08

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Solution

The fourth proportional to 625,254.96, 862,840.50 and 353,317.08 is: 487,571.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,254.96 : 862,840.50 = 353,317.08 : x
  2. Step 2: Convert to fraction form
    625,254.96/862,840.50 = 353,317.08/x
  3. Step 3: Cross multiply
    625,254.96x = 862,840.50 × 353,317.08
  4. Step 4: Simplify right side
    625,254.96x = 304,856,285,965.74
  5. Step 5: Solve for x
    x = 304,856,285,965.74/625,254.96
  6. Step 6: Final answer
    x = 487,571.16

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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.