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Finding the Fourth Proportional to 419,586.48, 579,070.89 and 256,233.78

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Solution

The fourth proportional to 419,586.48, 579,070.89 and 256,233.78 is: 353,627.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,586.48 : 579,070.89 = 256,233.78 : x
  2. Step 2: Convert to fraction form
    419,586.48/579,070.89 = 256,233.78/x
  3. Step 3: Cross multiply
    419,586.48x = 579,070.89 × 256,233.78
  4. Step 4: Simplify right side
    419,586.48x = 148,377,523,032.66
  5. Step 5: Solve for x
    x = 148,377,523,032.66/419,586.48
  6. Step 6: Final answer
    x = 353,627.99

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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.