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Finding the Fourth Proportional to 339,825.65, 468,989.25 and 186,890.76

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Solution

The fourth proportional to 339,825.65, 468,989.25 and 186,890.76 is: 257,925.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,825.65 : 468,989.25 = 186,890.76 : x
  2. Step 2: Convert to fraction form
    339,825.65/468,989.25 = 186,890.76/x
  3. Step 3: Cross multiply
    339,825.65x = 468,989.25 × 186,890.76
  4. Step 4: Simplify right side
    339,825.65x = 87,649,759,823.88
  5. Step 5: Solve for x
    x = 87,649,759,823.88/339,825.65
  6. Step 6: Final answer
    x = 257,925.67

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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.