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Finding the Fourth Proportional to 408,906.02, 613,457.40 and 172,316.36

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Solution

The fourth proportional to 408,906.02, 613,457.40 and 172,316.36 is: 258,515.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,906.02 : 613,457.40 = 172,316.36 : x
  2. Step 2: Convert to fraction form
    408,906.02/613,457.40 = 172,316.36/x
  3. Step 3: Cross multiply
    408,906.02x = 613,457.40 × 172,316.36
  4. Step 4: Simplify right side
    408,906.02x = 105,708,746,183.06
  5. Step 5: Solve for x
    x = 105,708,746,183.06/408,906.02
  6. Step 6: Final answer
    x = 258,515.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.