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Finding the Fourth Proportional to 445,563.90, 668,345.85 and 256,607.10

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Solution

The fourth proportional to 445,563.90, 668,345.85 and 256,607.10 is: 384,910.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,563.90 : 668,345.85 = 256,607.10 : x
  2. Step 2: Convert to fraction form
    445,563.90/668,345.85 = 256,607.10/x
  3. Step 3: Cross multiply
    445,563.90x = 668,345.85 × 256,607.10
  4. Step 4: Simplify right side
    445,563.90x = 171,502,290,365.54
  5. Step 5: Solve for x
    x = 171,502,290,365.54/445,563.90
  6. Step 6: Final answer
    x = 384,910.65

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Similar ratio
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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.