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Finding the Fourth Proportional to 479,212.40, 717,322.80 and 352,994.96

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Solution

The fourth proportional to 479,212.40, 717,322.80 and 352,994.96 is: 528,390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,212.40 : 717,322.80 = 352,994.96 : x
  2. Step 2: Convert to fraction form
    479,212.40/717,322.80 = 352,994.96/x
  3. Step 3: Cross multiply
    479,212.40x = 717,322.80 × 352,994.96
  4. Step 4: Simplify right side
    479,212.40x = 253,211,333,093.09
  5. Step 5: Solve for x
    x = 253,211,333,093.09/479,212.40
  6. Step 6: Final answer
    x = 528,390.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.