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Finding the Fourth Proportional to 318,837.92, 478,243.04 and 119,160.04

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Solution

The fourth proportional to 318,837.92, 478,243.04 and 119,160.04 is: 178,734.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,837.92 : 478,243.04 = 119,160.04 : x
  2. Step 2: Convert to fraction form
    318,837.92/478,243.04 = 119,160.04/x
  3. Step 3: Cross multiply
    318,837.92x = 478,243.04 × 119,160.04
  4. Step 4: Simplify right side
    318,837.92x = 56,987,459,776.12
  5. Step 5: Solve for x
    x = 56,987,459,776.12/318,837.92
  6. Step 6: Final answer
    x = 178,734.89

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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.