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Finding the Fourth Proportional to 140,482.89, 210,756.09 and 40,651.11

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Solution

The fourth proportional to 140,482.89, 210,756.09 and 40,651.11 is: 60,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,482.89 : 210,756.09 = 40,651.11 : x
  2. Step 2: Convert to fraction form
    140,482.89/210,756.09 = 40,651.11/x
  3. Step 3: Cross multiply
    140,482.89x = 210,756.09 × 40,651.11
  4. Step 4: Simplify right side
    140,482.89x = 8,567,468,997.76
  5. Step 5: Solve for x
    x = 8,567,468,997.76/140,482.89
  6. Step 6: Final answer
    x = 60,985.85

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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.