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Finding the Fourth Proportional to 353,308.56, 528,738.12 and 338,611.92

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Solution

The fourth proportional to 353,308.56, 528,738.12 and 338,611.92 is: 506,744.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,308.56 : 528,738.12 = 338,611.92 : x
  2. Step 2: Convert to fraction form
    353,308.56/528,738.12 = 338,611.92/x
  3. Step 3: Cross multiply
    353,308.56x = 528,738.12 × 338,611.92
  4. Step 4: Simplify right side
    353,308.56x = 179,037,029,990.39
  5. Step 5: Solve for x
    x = 179,037,029,990.39/353,308.56
  6. Step 6: Final answer
    x = 506,744.10

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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.