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Finding the Fourth Proportional to 212,448.54, 318,569.13 and 75,626.04

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Solution

The fourth proportional to 212,448.54, 318,569.13 and 75,626.04 is: 113,402.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,448.54 : 318,569.13 = 75,626.04 : x
  2. Step 2: Convert to fraction form
    212,448.54/318,569.13 = 75,626.04/x
  3. Step 3: Cross multiply
    212,448.54x = 318,569.13 × 75,626.04
  4. Step 4: Simplify right side
    212,448.54x = 24,092,121,768.15
  5. Step 5: Solve for x
    x = 24,092,121,768.15/212,448.54
  6. Step 6: Final answer
    x = 113,402.15

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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.