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Finding the Fourth Proportional to 447,622.08, 617,801.28 and 256,636.80

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Solution

The fourth proportional to 447,622.08, 617,801.28 and 256,636.80 is: 354,206.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,622.08 : 617,801.28 = 256,636.80 : x
  2. Step 2: Convert to fraction form
    447,622.08/617,801.28 = 256,636.80/x
  3. Step 3: Cross multiply
    447,622.08x = 617,801.28 × 256,636.80
  4. Step 4: Simplify right side
    447,622.08x = 158,550,543,535.10
  5. Step 5: Solve for x
    x = 158,550,543,535.10/447,622.08
  6. Step 6: Final answer
    x = 354,206.26

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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.