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Finding the Fourth Proportional to 318,369.21, 477,389.46 and 93,700.47

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Solution

The fourth proportional to 318,369.21, 477,389.46 and 93,700.47 is: 140,502.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,369.21 : 477,389.46 = 93,700.47 : x
  2. Step 2: Convert to fraction form
    318,369.21/477,389.46 = 93,700.47/x
  3. Step 3: Cross multiply
    318,369.21x = 477,389.46 × 93,700.47
  4. Step 4: Simplify right side
    318,369.21x = 44,731,616,775.05
  5. Step 5: Solve for x
    x = 44,731,616,775.05/318,369.21
  6. Step 6: Final answer
    x = 140,502.33

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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.