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Finding the Fourth Proportional to 399,093.96, 598,740.30 and 118,603.56

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Solution

The fourth proportional to 399,093.96, 598,740.30 and 118,603.56 is: 177,934.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,093.96 : 598,740.30 = 118,603.56 : x
  2. Step 2: Convert to fraction form
    399,093.96/598,740.30 = 118,603.56/x
  3. Step 3: Cross multiply
    399,093.96x = 598,740.30 × 118,603.56
  4. Step 4: Simplify right side
    399,093.96x = 71,012,731,095.47
  5. Step 5: Solve for x
    x = 71,012,731,095.47/399,093.96
  6. Step 6: Final answer
    x = 177,934.87

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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.