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Finding the Fourth Proportional to 670,876.05, 925,833.12 and 384,451.49

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Solution

The fourth proportional to 670,876.05, 925,833.12 and 384,451.49 is: 530,556.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,876.05 : 925,833.12 = 384,451.49 : x
  2. Step 2: Convert to fraction form
    670,876.05/925,833.12 = 384,451.49/x
  3. Step 3: Cross multiply
    670,876.05x = 925,833.12 × 384,451.49
  4. Step 4: Simplify right side
    670,876.05x = 355,937,922,475.35
  5. Step 5: Solve for x
    x = 355,937,922,475.35/670,876.05
  6. Step 6: Final answer
    x = 530,556.91

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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.