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Finding the Fourth Proportional to 347,102.53, 478,860.17 and 226,199.77

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Solution

The fourth proportional to 347,102.53, 478,860.17 and 226,199.77 is: 312,063.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,102.53 : 478,860.17 = 226,199.77 : x
  2. Step 2: Convert to fraction form
    347,102.53/478,860.17 = 226,199.77/x
  3. Step 3: Cross multiply
    347,102.53x = 478,860.17 × 226,199.77
  4. Step 4: Simplify right side
    347,102.53x = 108,318,057,921.86
  5. Step 5: Solve for x
    x = 108,318,057,921.86/347,102.53
  6. Step 6: Final answer
    x = 312,063.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.