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Finding the Fourth Proportional to 365,130.67, 547,690.09 and 140,539.90

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Solution

The fourth proportional to 365,130.67, 547,690.09 and 140,539.90 is: 210,807.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,130.67 : 547,690.09 = 140,539.90 : x
  2. Step 2: Convert to fraction form
    365,130.67/547,690.09 = 140,539.90/x
  3. Step 3: Cross multiply
    365,130.67x = 547,690.09 × 140,539.90
  4. Step 4: Simplify right side
    365,130.67x = 76,972,310,479.59
  5. Step 5: Solve for x
    x = 76,972,310,479.59/365,130.67
  6. Step 6: Final answer
    x = 210,807.57

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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.