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Finding the Fourth Proportional to 437,408.75, 603,636.86 and 256,103.71

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Solution

The fourth proportional to 437,408.75, 603,636.86 and 256,103.71 is: 353,430.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,408.75 : 603,636.86 = 256,103.71 : x
  2. Step 2: Convert to fraction form
    437,408.75/603,636.86 = 256,103.71/x
  3. Step 3: Cross multiply
    437,408.75x = 603,636.86 × 256,103.71
  4. Step 4: Simplify right side
    437,408.75x = 154,593,639,338.75
  5. Step 5: Solve for x
    x = 154,593,639,338.75/437,408.75
  6. Step 6: Final answer
    x = 353,430.61

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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.