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Finding the Fourth Proportional to 318,492.90, 477,662.49 and 93,792.30

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Solution

The fourth proportional to 318,492.90, 477,662.49 and 93,792.30 is: 140,665.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,492.90 : 477,662.49 = 93,792.30 : x
  2. Step 2: Convert to fraction form
    318,492.90/477,662.49 = 93,792.30/x
  3. Step 3: Cross multiply
    318,492.90x = 477,662.49 × 93,792.30
  4. Step 4: Simplify right side
    318,492.90x = 44,801,063,560.83
  5. Step 5: Solve for x
    x = 44,801,063,560.83/318,492.90
  6. Step 6: Final answer
    x = 140,665.82

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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.