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Finding the Fourth Proportional to 381,336.79, 526,244.84 and 211,570.51

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Solution

The fourth proportional to 381,336.79, 526,244.84 and 211,570.51 is: 291,967.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,336.79 : 526,244.84 = 211,570.51 : x
  2. Step 2: Convert to fraction form
    381,336.79/526,244.84 = 211,570.51/x
  3. Step 3: Cross multiply
    381,336.79x = 526,244.84 × 211,570.51
  4. Step 4: Simplify right side
    381,336.79x = 111,337,889,183.67
  5. Step 5: Solve for x
    x = 111,337,889,183.67/381,336.79
  6. Step 6: Final answer
    x = 291,967.34

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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.