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Finding the Fourth Proportional to 447,327.50, 617,328.92 and 256,377.74

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Solution

The fourth proportional to 447,327.50, 617,328.92 and 256,377.74 is: 353,811.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,327.50 : 617,328.92 = 256,377.74 : x
  2. Step 2: Convert to fraction form
    447,327.50/617,328.92 = 256,377.74/x
  3. Step 3: Cross multiply
    447,327.50x = 617,328.92 × 256,377.74
  4. Step 4: Simplify right side
    447,327.50x = 158,269,390,900.54
  5. Step 5: Solve for x
    x = 158,269,390,900.54/447,327.50
  6. Step 6: Final answer
    x = 353,811.01

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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.