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Finding the Fourth Proportional to 365,586.06, 547,601.49 and 215,664.78

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Solution

The fourth proportional to 365,586.06, 547,601.49 and 215,664.78 is: 323,038.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,586.06 : 547,601.49 = 215,664.78 : x
  2. Step 2: Convert to fraction form
    365,586.06/547,601.49 = 215,664.78/x
  3. Step 3: Cross multiply
    365,586.06x = 547,601.49 × 215,664.78
  4. Step 4: Simplify right side
    365,586.06x = 118,098,354,868.52
  5. Step 5: Solve for x
    x = 118,098,354,868.52/365,586.06
  6. Step 6: Final answer
    x = 323,038.45

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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.