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Finding the Fourth Proportional to 140,561.10, 210,841.65 and 93,321.90

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Solution

The fourth proportional to 140,561.10, 210,841.65 and 93,321.90 is: 139,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,561.10 : 210,841.65 = 93,321.90 : x
  2. Step 2: Convert to fraction form
    140,561.10/210,841.65 = 93,321.90/x
  3. Step 3: Cross multiply
    140,561.10x = 210,841.65 × 93,321.90
  4. Step 4: Simplify right side
    140,561.10x = 19,676,143,377.14
  5. Step 5: Solve for x
    x = 19,676,143,377.14/140,561.10
  6. Step 6: Final answer
    x = 139,982.85

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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.