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Finding the Fourth Proportional to 339,825.62, 468,989.21 and 186,890.74

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Solution

The fourth proportional to 339,825.62, 468,989.21 and 186,890.74 is: 257,925.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,825.62 : 468,989.21 = 186,890.74 : x
  2. Step 2: Convert to fraction form
    339,825.62/468,989.21 = 186,890.74/x
  3. Step 3: Cross multiply
    339,825.62x = 468,989.21 × 186,890.74
  4. Step 4: Simplify right side
    339,825.62x = 87,649,739,803.67
  5. Step 5: Solve for x
    x = 87,649,739,803.67/339,825.62
  6. Step 6: Final answer
    x = 257,925.64

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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.