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Finding the Fourth Proportional to 437,622.92, 603,978.83 and 256,407.18

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Solution

The fourth proportional to 437,622.92, 603,978.83 and 256,407.18 is: 353,876.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,622.92 : 603,978.83 = 256,407.18 : x
  2. Step 2: Convert to fraction form
    437,622.92/603,978.83 = 256,407.18/x
  3. Step 3: Cross multiply
    437,622.92x = 603,978.83 × 256,407.18
  4. Step 4: Simplify right side
    437,622.92x = 154,864,508,580.00
  5. Step 5: Solve for x
    x = 154,864,508,580.00/437,622.92
  6. Step 6: Final answer
    x = 353,876.59

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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.