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Finding the Fourth Proportional to 318,612.96, 477,971.28 and 119,003.04

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Solution

The fourth proportional to 318,612.96, 477,971.28 and 119,003.04 is: 178,523.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,612.96 : 477,971.28 = 119,003.04 : x
  2. Step 2: Convert to fraction form
    318,612.96/477,971.28 = 119,003.04/x
  3. Step 3: Cross multiply
    318,612.96x = 477,971.28 × 119,003.04
  4. Step 4: Simplify right side
    318,612.96x = 56,880,035,352.69
  5. Step 5: Solve for x
    x = 56,880,035,352.69/318,612.96
  6. Step 6: Final answer
    x = 178,523.92

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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.