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Finding the Fourth Proportional to 383,387.37, 529,104.99 and 211,335.93

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Solution

The fourth proportional to 383,387.37, 529,104.99 and 211,335.93 is: 291,660.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,387.37 : 529,104.99 = 211,335.93 : x
  2. Step 2: Convert to fraction form
    383,387.37/529,104.99 = 211,335.93/x
  3. Step 3: Cross multiply
    383,387.37x = 529,104.99 × 211,335.93
  4. Step 4: Simplify right side
    383,387.37x = 111,818,895,129.29
  5. Step 5: Solve for x
    x = 111,818,895,129.29/383,387.37
  6. Step 6: Final answer
    x = 291,660.35

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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.