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Finding the Fourth Proportional to 318,343.78, 477,463.76 and 93,651.69

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Solution

The fourth proportional to 318,343.78, 477,463.76 and 93,651.69 is: 140,462.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,343.78 : 477,463.76 = 93,651.69 : x
  2. Step 2: Convert to fraction form
    318,343.78/477,463.76 = 93,651.69/x
  3. Step 3: Cross multiply
    318,343.78x = 477,463.76 × 93,651.69
  4. Step 4: Simplify right side
    318,343.78x = 44,715,285,182.18
  5. Step 5: Solve for x
    x = 44,715,285,182.18/318,343.78
  6. Step 6: Final answer
    x = 140,462.25

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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.