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Finding the Fourth Proportional to 92,975.65, 139,481.39 and 39,666.71

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Solution

The fourth proportional to 92,975.65, 139,481.39 and 39,666.71 is: 59,507.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,975.65 : 139,481.39 = 39,666.71 : x
  2. Step 2: Convert to fraction form
    92,975.65/139,481.39 = 39,666.71/x
  3. Step 3: Cross multiply
    92,975.65x = 139,481.39 × 39,666.71
  4. Step 4: Simplify right side
    92,975.65x = 5,532,768,295.40
  5. Step 5: Solve for x
    x = 5,532,768,295.40/92,975.65
  6. Step 6: Final answer
    x = 59,507.71

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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.