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Finding the Fourth Proportional to 456,493.70, 684,740.55 and 448,717.70

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Solution

The fourth proportional to 456,493.70, 684,740.55 and 448,717.70 is: 673,076.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,493.70 : 684,740.55 = 448,717.70 : x
  2. Step 2: Convert to fraction form
    456,493.70/684,740.55 = 448,717.70/x
  3. Step 3: Cross multiply
    456,493.70x = 684,740.55 × 448,717.70
  4. Step 4: Simplify right side
    456,493.70x = 307,255,204,692.74
  5. Step 5: Solve for x
    x = 307,255,204,692.74/456,493.70
  6. Step 6: Final answer
    x = 673,076.55

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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.