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Finding the Fourth Proportional to 447,776.36, 617,457.80 and 345,818.42

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Solution

The fourth proportional to 447,776.36, 617,457.80 and 345,818.42 is: 476,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,776.36 : 617,457.80 = 345,818.42 : x
  2. Step 2: Convert to fraction form
    447,776.36/617,457.80 = 345,818.42/x
  3. Step 3: Cross multiply
    447,776.36x = 617,457.80 × 345,818.42
  4. Step 4: Simplify right side
    447,776.36x = 213,528,280,812.68
  5. Step 5: Solve for x
    x = 213,528,280,812.68/447,776.36
  6. Step 6: Final answer
    x = 476,863.68

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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.